252639887355 has 40 divisors (see below), whose sum is σ = 452969550000. Its totient is φ = 134714746944.

The previous prime is 252639887347. The next prime is 252639887359. The reversal of 252639887355 is 553788936252.

252639887355 is a `hidden beast` number, since 2 + 526 + 39 + 8 + 8 + 73 + 5 + 5 = 666.

It is not a de Polignac number, because 252639887355 - 2³ = 252639887347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252639887292 and 252639887301.

It is not an unprimeable number, because it can be changed into a prime (252639887359) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2091396 + ... + 2208894.

It is an arithmetic number, because the mean of its divisors is an integer number (11324238750).

Almost surely, 2^252639887355 is an apocalyptic number.

252639887355 is a deficient number, since it is larger than the sum of its proper divisors (200329662645).

252639887355 is a wasteful number, since it uses less digits than its factorization.

252639887355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122825 (or 122816 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 63.

The spelling of 252639887355 in words is "two hundred fifty-two billion, six hundred thirty-nine million, eight hundred eighty-seven thousand, three hundred fifty-five".