26139172892 has 36 divisors (see below), whose sum is σ = 53738778744. Its totient is φ = 11091578400.

The previous prime is 26139172889. The next prime is 26139172931. The reversal of 26139172892 is 29827193162.

It is a self number, because there is not a number n which added to its sum of digits gives 26139172892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640418 + ... + 680009.

It is an arithmetic number, because the mean of its divisors is an integer number (1492743854).

Almost surely, 2^26139172892 is an apocalyptic number.

It is an amenable number.

26139172892 is an abundant number, since it is smaller than the sum of its proper divisors (27599605852).

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

26139172892 is a wasteful number, since it uses less digits than its factorization.

26139172892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320546 (or 1320537 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The spelling of 26139172892 in words is "twenty-six billion, one hundred thirty-nine million, one hundred seventy-two thousand, eight hundred ninety-two".