12732971776 has 72 divisors (see below), whose sum is σ = 29074510080. Its totient is φ = 5451838464.

The previous prime is 12732971759. The next prime is 12732971791. The reversal of 12732971776 is 67717923721.

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, 2360955 + ... + 2366341.

It is an arithmetic number, because the mean of its divisors is an integer number (403812640).

Almost surely, 2^12732971776 is an apocalyptic number.

12732971776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12732971776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14537255040).

12732971776 is an abundant number, since it is smaller than the sum of its proper divisors (16341538304).

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

12732971776 is an equidigital number, since it uses as much as digits as its factorization.

12732971776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729 (or 6715 counting only the distinct ones).

The product of its digits is 1555848, while the sum is 52.

The spelling of 12732971776 in words is "twelve billion, seven hundred thirty-two million, nine hundred seventy-one thousand, seven hundred seventy-six".