26691938475 has 24 divisors (see below), whose sum is σ = 44274457920. Its totient is φ = 14189317920.

The previous prime is 26691938467. The next prime is 26691938501. The reversal of 26691938475 is 57483919662.

It is not a de Polignac number, because 26691938475 - 2³ = 26691938467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556605 + ... + 602654.

It is an arithmetic number, because the mean of its divisors is an integer number (1844769080).

Almost surely, 2^26691938475 is an apocalyptic number.

26691938475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26691938475 is a deficient number, since it is larger than the sum of its proper divisors (17582519445).

26691938475 is a wasteful number, since it uses less digits than its factorization.

26691938475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159579 (or 1159574 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The spelling of 26691938475 in words is "twenty-six billion, six hundred ninety-one million, nine hundred thirty-eight thousand, four hundred seventy-five".