26139993312 has 24 divisors (see below), whose sum is σ = 68617482696. Its totient is φ = 8713331072.

The previous prime is 26139993311. The next prime is 26139993331. The reversal of 26139993312 is 21339993162.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26139993311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136145703 + ... + 136145894.

It is an arithmetic number, because the mean of its divisors is an integer number (2859061779).

Almost surely, 2^26139993312 is an apocalyptic number.

It is an amenable number.

26139993312 is an abundant number, since it is smaller than the sum of its proper divisors (42477489384).

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

26139993312 is a wasteful number, since it uses less digits than its factorization.

26139993312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272291610 (or 272291602 counting only the distinct ones).

The product of its digits is 472392, while the sum is 48.

The spelling of 26139993312 in words is "twenty-six billion, one hundred thirty-nine million, nine hundred ninety-three thousand, three hundred twelve".