52157167236 has 18 divisors (see below), whose sum is σ = 131841728382. Its totient is φ = 17385722400.

The previous prime is 52157167217. The next prime is 52157167247. The reversal of 52157167236 is 63276175125.

It is a happy number.

52157167236 is a `hidden beast` number, since 5 + 2 + 1 + 571 + 6 + 72 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48593793600 + 3563373636 = 220440^2 + 59694^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 52157167191 and 52157167200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724405065 + ... + 724405136.

Almost surely, 2^52157167236 is an apocalyptic number.

It is an amenable number.

52157167236 is an abundant number, since it is smaller than the sum of its proper divisors (79684561146).

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

52157167236 is a wasteful number, since it uses less digits than its factorization.

52157167236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448810211 (or 1448810206 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 52157167236 in words is "fifty-two billion, one hundred fifty-seven million, one hundred sixty-seven thousand, two hundred thirty-six".