13465331856 has 60 divisors (see below), whose sum is σ = 38702735292. Its totient is φ = 4367132928.

The previous prime is 13465331839. The next prime is 13465331897. The reversal of 13465331856 is 65813356431.

13465331856 is a `hidden beast` number, since 1 + 3 + 465 + 3 + 3 + 185 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12742797456 + 722534400 = 112884^2 + 26880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258311 + ... + 1268966.

Almost surely, 2^13465331856 is an apocalyptic number.

13465331856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13465331856 is an abundant number, since it is smaller than the sum of its proper divisors (25237403436).

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

13465331856 is a wasteful number, since it uses less digits than its factorization.

13465331856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527328 (or 2527319 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 13465331856 in words is "thirteen billion, four hundred sixty-five million, three hundred thirty-one thousand, eight hundred fifty-six".