12813726972832 has 48 divisors (see below), whose sum is σ = 25280885435400. Its totient is φ = 6393197002752.

The previous prime is 12813726972817. The next prime is 12813726972853. The reversal of 12813726972832 is 23827962731821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4980199236496 + 7833527736336 = 2231636^2 + 2798844^2 .

It is a super-2 number, since 2×12813726972832² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33167208 + ... + 33551320.

Almost surely, 2^{12813726972832} is an apocalyptic number.

It is an amenable number.

12813726972832 is a deficient number, since it is larger than the sum of its proper divisors (12467158462568).

12813726972832 is a wasteful number, since it uses less digits than its factorization.

12813726972832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386345 (or 386337 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 61.

The spelling of 12813726972832 in words is "twelve trillion, eight hundred thirteen billion, seven hundred twenty-six million, nine hundred seventy-two thousand, eight hundred thirty-two".