26415040256 has 36 divisors (see below), whose sum is σ = 57520257144. Its totient is φ = 12006835200.

The previous prime is 26415040247. The next prime is 26415040277. The reversal of 26415040256 is 65204051462.

It is a super-2 number, since 2×26415040256² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4687355 + ... + 4692986.

Almost surely, 2^26415040256 is an apocalyptic number.

It is an amenable number.

26415040256 is an abundant number, since it is smaller than the sum of its proper divisors (31105216888).

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

26415040256 is an equidigital number, since it uses as much as digits as its factorization.

26415040256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380368 (or 9380354 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 26415040256 in words is "twenty-six billion, four hundred fifteen million, forty thousand, two hundred fifty-six".