12791246664 has 32 divisors (see below), whose sum is σ = 36546419520. Its totient is φ = 3654641856.

The previous prime is 12791246617. The next prime is 12791246701. The reversal of 12791246664 is 46664219721.

It is a happy number.

It is a super-2 number, since 2×12791246664² (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 7 ways as a sum of consecutive naturals, for example, 38069019 + ... + 38069354.

It is an arithmetic number, because the mean of its divisors is an integer number (1142075610).

Almost surely, 2^12791246664 is an apocalyptic number.

12791246664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12791246664 is an abundant number, since it is smaller than the sum of its proper divisors (23755172856).

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

12791246664 is a wasteful number, since it uses less digits than its factorization.

12791246664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76138389 (or 76138385 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The spelling of 12791246664 in words is "twelve billion, seven hundred ninety-one million, two hundred forty-six thousand, six hundred sixty-four".