12660772180 has 48 divisors (see below), whose sum is σ = 30686737536. Its totient is φ = 4297852800.

The previous prime is 12660772141. The next prime is 12660772193. The reversal of 12660772180 is 8127706621.

It is a congruent number.

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, 433554 + ... + 461833.

It is an arithmetic number, because the mean of its divisors is an integer number (639307032).

Almost surely, 2^12660772180 is an apocalyptic number.

12660772180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12660772180 is an abundant number, since it is smaller than the sum of its proper divisors (18025965356).

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

12660772180 is a wasteful number, since it uses less digits than its factorization.

12660772180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895504 (or 895502 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 12660772180 in words is "twelve billion, six hundred sixty million, seven hundred seventy-two thousand, one hundred eighty".