12613278672 has 30 divisors (see below), whose sum is σ = 35299662242. Its totient is φ = 4204426176.

The previous prime is 12613278659. The next prime is 12613278701. The reversal of 12613278672 is 27687231621.

12613278672 is a `hidden beast` number, since 1 + 2 + 613 + 27 + 8 + 6 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11209727376 + 1403551296 = 105876^2 + 37464^2 .

It is a super-3 number, since 3×12613278672³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43795963 + ... + 43796250.

Almost surely, 2^12613278672 is an apocalyptic number.

12613278672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12613278672 is an abundant number, since it is smaller than the sum of its proper divisors (22686383570).

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

12613278672 is a wasteful number, since it uses less digits than its factorization.

12613278672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87592227 (or 87592218 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 12613278672 in words is "twelve billion, six hundred thirteen million, two hundred seventy-eight thousand, six hundred seventy-two".