26512506465 has 32 divisors (see below), whose sum is σ = 43016918400. Its totient is φ = 13942424064.

The previous prime is 26512506457. The next prime is 26512506481. The reversal of 26512506465 is 56460521562.

It is a happy number.

It is not a de Polignac number, because 26512506465 - 2³ = 26512506457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262902 + ... + 349488.

It is an arithmetic number, because the mean of its divisors is an integer number (1344278700).

Almost surely, 2^26512506465 is an apocalyptic number.

It is an amenable number.

26512506465 is a deficient number, since it is larger than the sum of its proper divisors (16504411935).

26512506465 is a wasteful number, since it uses less digits than its factorization.

26512506465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86881.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 26512506465 in words is "twenty-six billion, five hundred twelve million, five hundred six thousand, four hundred sixty-five".