26697621252 has 12 divisors (see below), whose sum is σ = 62294449616. Its totient is φ = 8899207080.

The previous prime is 26697621239. The next prime is 26697621257. The reversal of 26697621252 is 25212679662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (26697621257) 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, 1112400874 + ... + 1112400897.

Almost surely, 2^26697621252 is an apocalyptic number.

It is an amenable number.

26697621252 is an abundant number, since it is smaller than the sum of its proper divisors (35596828364).

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

26697621252 is a wasteful number, since it uses less digits than its factorization.

26697621252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224801778 (or 2224801776 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The spelling of 26697621252 in words is "twenty-six billion, six hundred ninety-seven million, six hundred twenty-one thousand, two hundred fifty-two".