252631213757 has 12 divisors (see below), whose sum is σ = 273579052500. Its totient is φ = 233181157248.

The previous prime is 252631213741. The next prime is 252631213759. The reversal of 252631213757 is 757312136252.

It can be written as a sum of positive squares in 6 ways, for example, as 20486483161 + 232144730596 = 143131^2 + 481814^2 .

It is not a de Polignac number, because 252631213757 - 2⁴ = 252631213741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252631213759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2700083 + ... + 2792079.

It is an arithmetic number, because the mean of its divisors is an integer number (22798254375).

Almost surely, 2^252631213757 is an apocalyptic number.

It is an amenable number.

252631213757 is a deficient number, since it is larger than the sum of its proper divisors (20947838743).

252631213757 is a wasteful number, since it uses less digits than its factorization.

252631213757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108272 (or 108259 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The spelling of 252631213757 in words is "two hundred fifty-two billion, six hundred thirty-one million, two hundred thirteen thousand, seven hundred fifty-seven".