13628678931 has 24 divisors (see below), whose sum is σ = 22501290240. Its totient is φ = 7786724976.

The previous prime is 13628678887. The next prime is 13628678993. The reversal of 13628678931 is 13987682631.

13628678931 is a `hidden beast` number, since 1 + 3 + 628 + 6 + 7 + 8 + 9 + 3 + 1 = 666.

It is not a de Polignac number, because 13628678931 - 2²⁹ = 13091808019 is a prime.

It is a super-2 number, since 2×13628678931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13628673931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 714010 + ... + 732848.

It is an arithmetic number, because the mean of its divisors is an integer number (937553760).

Almost surely, 2^13628678931 is an apocalyptic number.

13628678931 is a deficient number, since it is larger than the sum of its proper divisors (8872611309).

13628678931 is a wasteful number, since it uses less digits than its factorization.

13628678931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30335 (or 30332 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 13628678931 in words is "thirteen billion, six hundred twenty-eight million, six hundred seventy-eight thousand, nine hundred thirty-one".