252263649657 has 16 divisors (see below), whose sum is σ = 336880479680. Its totient is φ = 167911444800.

The previous prime is 252263649643. The next prime is 252263649709. The reversal of 252263649657 is 756946362252.

It is not a de Polignac number, because 252263649657 - 2²² = 252259455353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252263649597 and 252263649606.

It is not an unprimeable number, because it can be changed into a prime (252262649657) 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, 7371807 + ... + 7405947.

It is an arithmetic number, because the mean of its divisors is an integer number (21055029980).

Almost surely, 2^252263649657 is an apocalyptic number.

It is an amenable number.

252263649657 is a deficient number, since it is larger than the sum of its proper divisors (84616830023).

252263649657 is a wasteful number, since it uses less digits than its factorization.

252263649657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37944.

The product of its digits is 32659200, while the sum is 57.

The spelling of 252263649657 in words is "two hundred fifty-two billion, two hundred sixty-three million, six hundred forty-nine thousand, six hundred fifty-seven".