13361972836 has 27 divisors (see below), whose sum is σ = 24229740171. Its totient is φ = 6447370944.

The previous prime is 13361972821. The next prime is 13361972849. The reversal of 13361972836 is 63827916331.

The square root of 13361972836 is 115594.

It is a perfect power (a square), and thus also a powerful number.

13361972836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 919908900 + 12442063936 = 30330^2 + 111544^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13361972836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6703456 + ... + 6705448.

Almost surely, 2^13361972836 is an apocalyptic number.

13361972836 is the 115594-th square number.

It is an amenable number.

13361972836 is a deficient number, since it is larger than the sum of its proper divisors (10867767335).

13361972836 is an frugal number, since it uses more digits than its factorization.

13361972836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048 (or 2024 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

Multiplying 13361972836 by its sum of digits (49), we get a square (654736668964 = 809158²).

The spelling of 13361972836 in words is "thirteen billion, three hundred sixty-one million, nine hundred seventy-two thousand, eight hundred thirty-six".