13426619538 has 16 divisors (see below), whose sum is σ = 27477733536. Its totient is φ = 4371457440.

The previous prime is 13426619509. The next prime is 13426619543. The reversal of 13426619538 is 83591662431.

It is a super-2 number, since 2×13426619538² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26020323 + ... + 26020838.

It is an arithmetic number, because the mean of its divisors is an integer number (1717358346).

Almost surely, 2^13426619538 is an apocalyptic number.

13426619538 is an abundant number, since it is smaller than the sum of its proper divisors (14051113998).

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

13426619538 is a wasteful number, since it uses less digits than its factorization.

13426619538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52041209.

The product of its digits is 933120, while the sum is 48.

The spelling of 13426619538 in words is "thirteen billion, four hundred twenty-six million, six hundred nineteen thousand, five hundred thirty-eight".