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8537452747420 = 2251424329970697
BaseRepresentation
bin111110000111100011111…
…0101101001101010011100
31010020011122202112210222011
41330033013311221222130
52104334200400404140
630054015053401004
71540545015665212
oct174170765515234
933204582483864
108537452747420
1127a1793561153
12b5a747799164
1349c10315c32c
14217301a3ccb2
15ec12ab1dcea
hex7c3c7d69a9c

8537452747420 has 24 divisors (see below), whose sum is σ = 17929910137104. Its totient is φ = 3414741219456.

The previous prime is 8537452747409. The next prime is 8537452747429. The reversal of 8537452747420 is 247472547358.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8537452747429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14700489 + ... + 15270208.

It is an arithmetic number, because the mean of its divisors is an integer number (747079589046).

Almost surely, 28537452747420 is an apocalyptic number.

It is an amenable number.

8537452747420 is an abundant number, since it is smaller than the sum of its proper divisors (9392457389684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8537452747420 is a wasteful number, since it uses less digits than its factorization.

8537452747420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29984949 (or 29984947 counting only the distinct ones).

The product of its (nonzero) digits is 52684800, while the sum is 58.

The spelling of 8537452747420 in words is "eight trillion, five hundred thirty-seven billion, four hundred fifty-two million, seven hundred forty-seven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 14243 28486 56972 71215 142430 284860 29970697 59941394 119882788 149853485 299706970 599413940 426872637371 853745274742 1707490549484 2134363186855 4268726373710 8537452747420