13426591972 has 24 divisors (see below), whose sum is σ = 23967933696. Its totient is φ = 6578908128.

The previous prime is 13426591967. The next prime is 13426591979. The reversal of 13426591972 is 27919562431.

It is not an unprimeable number, because it can be changed into a prime (13426591979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146263 + ... + 219649.

It is an arithmetic number, because the mean of its divisors is an integer number (998663904).

Almost surely, 2^13426591972 is an apocalyptic number.

It is an amenable number.

13426591972 is a deficient number, since it is larger than the sum of its proper divisors (10541341724).

13426591972 is a wasteful number, since it uses less digits than its factorization.

13426591972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74307 (or 74305 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The spelling of 13426591972 in words is "thirteen billion, four hundred twenty-six million, five hundred ninety-one thousand, nine hundred seventy-two".