13426525644 has 24 divisors (see below), whose sum is σ = 35804068608. Its totient is φ = 3836150160.

The previous prime is 13426525621. The next prime is 13426525681. The reversal of 13426525644 is 44652562431.

It is a happy number.

It is a super-2 number, since 2×13426525644² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 13426525596 and 13426525605.

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, 79919712 + ... + 79919879.

It is an arithmetic number, because the mean of its divisors is an integer number (1491836192).

Almost surely, 2^13426525644 is an apocalyptic number.

13426525644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13426525644 is an abundant number, since it is smaller than the sum of its proper divisors (22377542964).

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

13426525644 is a wasteful number, since it uses less digits than its factorization.

13426525644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159839605 (or 159839603 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The spelling of 13426525644 in words is "thirteen billion, four hundred twenty-six million, five hundred twenty-five thousand, six hundred forty-four".