253290684968 has 32 divisors (see below), whose sum is σ = 480086303400. Its totient is φ = 125271595008.

The previous prime is 253290684883. The next prime is 253290684973. The reversal of 253290684968 is 869486092352.

It can be written as a sum of positive squares in 4 ways, for example, as 247743116644 + 5547568324 = 497738^2 + 74482^2 .

It is a super-2 number, since 2×253290684968² (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 253290684968.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272180 + ... + 762012.

Almost surely, 2^253290684968 is an apocalyptic number.

It is an amenable number.

253290684968 is a deficient number, since it is larger than the sum of its proper divisors (226795618432).

253290684968 is a wasteful number, since it uses less digits than its factorization.

253290684968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490541 (or 490537 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 253290684968 in words is "two hundred fifty-three billion, two hundred ninety million, six hundred eighty-four thousand, nine hundred sixty-eight".