13642435624 has 16 divisors (see below), whose sum is σ = 25588379700. Its totient is φ = 6818867712.

The previous prime is 13642435601. The next prime is 13642435669. The reversal of 13642435624 is 42653424631.

It can be written as a sum of positive squares in 2 ways, for example, as 10036433124 + 3606002500 = 100182^2 + 60050^2 .

It is a super-2 number, since 2×13642435624² (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 3 ways as a sum of consecutive naturals, for example, 268969 + ... + 315640.

Almost surely, 2^13642435624 is an apocalyptic number.

It is an amenable number.

13642435624 is a deficient number, since it is larger than the sum of its proper divisors (11945944076).

13642435624 is a wasteful number, since it uses less digits than its factorization.

13642435624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587532 (or 587528 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

The spelling of 13642435624 in words is "thirteen billion, six hundred forty-two million, four hundred thirty-five thousand, six hundred twenty-four".