12664736580 has 48 divisors (see below), whose sum is σ = 35521161984. Its totient is φ = 3371558400.

The previous prime is 12664736569. The next prime is 12664736587. The reversal of 12664736580 is 8563746621.

It is not an unprimeable number, because it can be changed into a prime (12664736587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142396 + ... + 213555.

It is an arithmetic number, because the mean of its divisors is an integer number (740024208).

Almost surely, 2^12664736580 is an apocalyptic number.

12664736580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12664736580 is an abundant number, since it is smaller than the sum of its proper divisors (22856425404).

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

12664736580 is a wasteful number, since it uses less digits than its factorization.

12664736580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356556 (or 356554 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 12664736580 in words is "twelve billion, six hundred sixty-four million, seven hundred thirty-six thousand, five hundred eighty".