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80613911175625 = 5483243272
BaseRepresentation
bin10010010101000101100011…
…100010100010000111001001
3101120102121121002001000120001
4102111011203202202013021
541031234242230110000
6443241304115403001
722660106604035602
oct2225054342420711
9346377532030501
1080613911175625
11237601932928a3
12905b6238b3461
1335c9b2289b799
1415c9a3c5ccda9
1594be45be146a
hex4951638a21c9

80613911175625 has 45 divisors (see below), whose sum is σ = 101987012350641. Its totient is φ = 63699402606000.

The previous prime is 80613911175593. The next prime is 80613911175649. The reversal of 80613911175625 is 52657111931608.

The square root of 80613911175625 is 8978525.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 6320130636169 + 74293780539456 = 2513987^2 + 8619384^2 .

It is not a de Polignac number, because 80613911175625 - 25 = 80613911175593 is a prime.

It is a super-3 number, since 3×806139111756253 (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 18630437212 + ... + 18630441538.

Almost surely, 280613911175625 is an apocalyptic number.

80613911175625 is the 8978525-th square number.

80613911175625 is the 4489263-rd centered octagonal number.

It is an amenable number.

80613911175625 is a deficient number, since it is larger than the sum of its proper divisors (21373101175016).

80613911175625 is an frugal number, since it uses more digits than its factorization.

80613911175625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8840 (or 4415 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 80613911175625 in words is "eighty trillion, six hundred thirteen billion, nine hundred eleven million, one hundred seventy-five thousand, six hundred twenty-five".

Divisors: 1 5 25 83 125 415 625 2075 4327 6889 10375 21635 34445 51875 108175 172225 359141 540875 861125 1795705 2704375 4305625 8978525 18722929 29808703 44892625 93614645 149043515 224463125 468073225 745217575 1554003107 2340366125 3726087875 7770015535 11701830625 18630439375 38850077675 128982257881 194250388375 644911289405 971251941875 3224556447025 16122782235125 80613911175625