13612424891 has 4 divisors (see below), whose sum is σ = 14659534512. Its totient is φ = 12565315272.

The previous prime is 13612424887. The next prime is 13612424897. The reversal of 13612424891 is 19842421631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13612424891 - 2² = 13612424887 is a prime.

It is a super-2 number, since 2×13612424891² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13612424897) 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, 523554791 + ... + 523554816.

It is an arithmetic number, because the mean of its divisors is an integer number (3664883628).

Almost surely, 2^13612424891 is an apocalyptic number.

13612424891 is a deficient number, since it is larger than the sum of its proper divisors (1047109621).

13612424891 is a wasteful number, since it uses less digits than its factorization.

13612424891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047109620.

The product of its digits is 82944, while the sum is 41.

The spelling of 13612424891 in words is "thirteen billion, six hundred twelve million, four hundred twenty-four thousand, eight hundred ninety-one".