252311615020 has 48 divisors (see below), whose sum is σ = 532778803200. Its totient is φ = 100367916480.

The previous prime is 252311614981. The next prime is 252311615041. The reversal of 252311615020 is 20516113252.

It is a super-2 number, since 2×252311615020² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252311615020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18172441 + ... + 18186319.

It is an arithmetic number, because the mean of its divisors is an integer number (11099558400).

Almost surely, 2^252311615020 is an apocalyptic number.

252311615020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252311615020 is an abundant number, since it is smaller than the sum of its proper divisors (280467188180).

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

252311615020 is a wasteful number, since it uses less digits than its factorization.

252311615020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838 (or 18836 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 252311615020 its reverse (20516113252), we get a palindrome (272827728272).

The spelling of 252311615020 in words is "two hundred fifty-two billion, three hundred eleven million, six hundred fifteen thousand, twenty".