52136794368 has 90 divisors (see below), whose sum is σ = 155462548934. Its totient is φ = 17378924544.

The previous prime is 52136794349. The next prime is 52136794421. The reversal of 52136794368 is 86349763125.

52136794368 is a `hidden beast` number, since 5 + 2 + 136 + 79 + 436 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49625581824 + 2511212544 = 222768^2 + 50112^2 .

It is a super-2 number, since 2×52136794368² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1236421 + ... + 1277892.

Almost surely, 2^52136794368 is an apocalyptic number.

It is an amenable number.

52136794368 is an abundant number, since it is smaller than the sum of its proper divisors (103325754566).

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

52136794368 is an equidigital number, since it uses as much as digits as its factorization.

52136794368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514341 (or 2514318 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 52136794368 in words is "fifty-two billion, one hundred thirty-six million, seven hundred ninety-four thousand, three hundred sixty-eight".