252624312978 has 32 divisors (see below), whose sum is σ = 513587671296. Its totient is φ = 82822175568.

The previous prime is 252624312977. The next prime is 252624313057. The reversal of 252624312978 is 879213426252.

It is a self number, because there is not a number n which added to its sum of digits gives 252624312978.

It is not an unprimeable number, because it can be changed into a prime (252624312973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230176 + ... + 747147.

It is an arithmetic number, because the mean of its divisors is an integer number (16049614728).

Almost surely, 2^252624312978 is an apocalyptic number.

252624312978 is an abundant number, since it is smaller than the sum of its proper divisors (260963358318).

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

252624312978 is a wasteful number, since it uses less digits than its factorization.

252624312978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978038.

The product of its digits is 2903040, while the sum is 51.

The spelling of 252624312978 in words is "two hundred fifty-two billion, six hundred twenty-four million, three hundred twelve thousand, nine hundred seventy-eight".