12620686512 has 80 divisors (see below), whose sum is σ = 37710086400. Its totient is φ = 3562457856.

The previous prime is 12620686469. The next prime is 12620686537. The reversal of 12620686512 is 21568602621.

It is a super-2 number, since 2×12620686512² (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 15 ways as a sum of consecutive naturals, for example, 198387 + ... + 254162.

It is an arithmetic number, because the mean of its divisors is an integer number (471376080).

Almost surely, 2^12620686512 is an apocalyptic number.

12620686512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12620686512 is an abundant number, since it is smaller than the sum of its proper divisors (25089399888).

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

12620686512 is a wasteful number, since it uses less digits than its factorization.

12620686512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452650 (or 452644 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 12620686512 in words is "twelve billion, six hundred twenty million, six hundred eighty-six thousand, five hundred twelve".