26791630872 has 64 divisors (see below), whose sum is σ = 68498956800. Its totient is φ = 8730134400.

The previous prime is 26791630849. The next prime is 26791630883. The reversal of 26791630872 is 27803619762.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121543 + ... + 261449.

It is an arithmetic number, because the mean of its divisors is an integer number (1070296200).

Almost surely, 2^26791630872 is an apocalyptic number.

It is an amenable number.

26791630872 is an abundant number, since it is smaller than the sum of its proper divisors (41707325928).

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

26791630872 is a wasteful number, since it uses less digits than its factorization.

26791630872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140096 (or 140092 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 26791630872 in words is "twenty-six billion, seven hundred ninety-one million, six hundred thirty thousand, eight hundred seventy-two".