26697642964 has 6 divisors (see below), whose sum is σ = 46720875194. Its totient is φ = 13348821480.

The previous prime is 26697642953. The next prime is 26697642971. The reversal of 26697642964 is 46924679662.

It can be written as a sum of positive squares in only one way, i.e., 17276999364 + 9420643600 = 131442^2 + 97060^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3337205367 + ... + 3337205374.

Almost surely, 2^26697642964 is an apocalyptic number.

It is an amenable number.

26697642964 is a deficient number, since it is larger than the sum of its proper divisors (20023232230).

26697642964 is a wasteful number, since it uses less digits than its factorization.

26697642964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674410745 (or 6674410743 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 61.

The spelling of 26697642964 in words is "twenty-six billion, six hundred ninety-seven million, six hundred forty-two thousand, nine hundred sixty-four".