Search a number
-
+
12548430511 = 31974173073
BaseRepresentation
bin10111010111111000…
…11101101010101111
31012101112002022120121
423223330131222233
5201144344234021
65433100225411
7622650620341
oct135374355257
935345068517
1012548430511
11535a297631
12252253b267
13124c975816
148707bd291
154d69a3741
hex2ebf1daaf

12548430511 has 8 divisors (see below), whose sum is σ = 13086760064. Its totient is φ = 12018447360.

The previous prime is 12548430481. The next prime is 12548430523. The reversal of 12548430511 is 11503484521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12548430511 is a prime.

It is a super-2 number, since 2×125484305112 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12548430571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083530 + ... + 2089543.

It is an arithmetic number, because the mean of its divisors is an integer number (1635845008).

Almost surely, 212548430511 is an apocalyptic number.

12548430511 is a deficient number, since it is larger than the sum of its proper divisors (538329553).

12548430511 is an equidigital number, since it uses as much as digits as its factorization.

12548430511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173201.

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 12548430511 in words is "twelve billion, five hundred forty-eight million, four hundred thirty thousand, five hundred eleven".

Divisors: 1 31 97 3007 4173073 129365263 404788081 12548430511