253112256656464 has 20 divisors (see below), whose sum is σ = 490407773205556. Its totient is φ = 126555411958272.

The previous prime is 253112256656461. The next prime is 253112256656507. The reversal of 253112256656464 is 464656652211352.

It can be written as a sum of positive squares in 2 ways, for example, as 31950982350400 + 221161274306064 = 5652520^2 + 14871492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 253112256656399 and 253112256656408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253112256656461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41852409 + ... + 47516824.

Almost surely, 2^{253112256656464} is an apocalyptic number.

It is an amenable number.

253112256656464 is a deficient number, since it is larger than the sum of its proper divisors (237295516549092).

253112256656464 is a wasteful number, since it uses less digits than its factorization.

253112256656464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89546254 (or 89546248 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 58.

The spelling of 253112256656464 in words is "two hundred fifty-three trillion, one hundred twelve billion, two hundred fifty-six million, six hundred fifty-six thousand, four hundred sixty-four".