26638475264 has 28 divisors (see below), whose sum is σ = 53273715144. Its totient is φ = 13319233536.

The previous prime is 26638475257. The next prime is 26638475299. The reversal of 26638475264 is 46257483662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1617692 + ... + 1634075.

Almost surely, 2^26638475264 is an apocalyptic number.

It is an amenable number.

26638475264 is a deficient number, since it is larger than the sum of its proper divisors (26635239880).

26638475264 is an frugal number, since it uses more digits than its factorization.

26638475264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251793 (or 3251769 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 53.

The spelling of 26638475264 in words is "twenty-six billion, six hundred thirty-eight million, four hundred seventy-five thousand, two hundred sixty-four".