26397381872 has 20 divisors (see below), whose sum is σ = 53836766280. Its totient is φ = 12504022848.

The previous prime is 26397381869. The next prime is 26397381887. The reversal of 26397381872 is 27818379362.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43416443 + ... + 43417050.

It is an arithmetic number, because the mean of its divisors is an integer number (2691838314).

Almost surely, 2^26397381872 is an apocalyptic number.

It is an amenable number.

26397381872 is an abundant number, since it is smaller than the sum of its proper divisors (27439384408).

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

26397381872 is a wasteful number, since it uses less digits than its factorization.

26397381872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86833520 (or 86833514 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The spelling of 26397381872 in words is "twenty-six billion, three hundred ninety-seven million, three hundred eighty-one thousand, eight hundred seventy-two".