13932451216 has 20 divisors (see below), whose sum is σ = 27175297500. Its totient is φ = 6919471232.

The previous prime is 13932451207. The next prime is 13932451259. The reversal of 13932451216 is 61215423931.

It can be written as a sum of positive squares in 2 ways, for example, as 2182758400 + 11749692816 = 46720^2 + 108396^2 .

It is a super-2 number, since 2×13932451216² (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, 2919691 + ... + 2924458.

It is an arithmetic number, because the mean of its divisors is an integer number (1358764875).

Almost surely, 2^13932451216 is an apocalyptic number.

13932451216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13932451216 is a deficient number, since it is larger than the sum of its proper divisors (13242846284).

13932451216 is a wasteful number, since it uses less digits than its factorization.

13932451216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844306 (or 5844300 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The spelling of 13932451216 in words is "thirteen billion, nine hundred thirty-two million, four hundred fifty-one thousand, two hundred sixteen".