12690955464 has 64 divisors (see below), whose sum is σ = 36647691840. Its totient is φ = 3619522560.

The previous prime is 12690955393. The next prime is 12690955471. The reversal of 12690955464 is 46455909621.

It is a super-2 number, since 2×12690955464² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 1409389 + ... + 1418364.

It is an arithmetic number, because the mean of its divisors is an integer number (572620185).

Almost surely, 2^12690955464 is an apocalyptic number.

It is an amenable number.

12690955464 is an abundant number, since it is smaller than the sum of its proper divisors (23956736376).

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

12690955464 is a wasteful number, since it uses less digits than its factorization.

12690955464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827790 (or 2827786 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 12690955464 in words is "twelve billion, six hundred ninety million, nine hundred fifty-five thousand, four hundred sixty-four".