12696581484 has 72 divisors (see below), whose sum is σ = 32310100368. Its totient is φ = 4203816960.

The previous prime is 12696581377. The next prime is 12696581533. The reversal of 12696581484 is 48418569621.

12696581484 is a `hidden beast` number, since 1 + 26 + 9 + 65 + 81 + 484 = 666.

It is a super-2 number, since 2×12696581484² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12696581484.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3508444 + ... + 3512060.

It is an arithmetic number, because the mean of its divisors is an integer number (448751394).

Almost surely, 2^12696581484 is an apocalyptic number.

It is an amenable number.

12696581484 is an abundant number, since it is smaller than the sum of its proper divisors (19613518884).

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

12696581484 is a wasteful number, since it uses less digits than its factorization.

12696581484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255 (or 4250 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 12696581484 in words is "twelve billion, six hundred ninety-six million, five hundred eighty-one thousand, four hundred eighty-four".