12745955780 has 12 divisors (see below), whose sum is σ = 26766507180. Its totient is φ = 5098382304.

The previous prime is 12745955777. The next prime is 12745955821. The reversal of 12745955780 is 8755954721.

It can be written as a sum of positive squares in 2 ways, for example, as 7731333184 + 5014622596 = 87928^2 + 70814^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318648875 + ... + 318648914.

It is an arithmetic number, because the mean of its divisors is an integer number (2230542265).

Almost surely, 2^12745955780 is an apocalyptic number.

12745955780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12745955780 is an abundant number, since it is smaller than the sum of its proper divisors (14020551400).

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

12745955780 is a wasteful number, since it uses less digits than its factorization.

12745955780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637297798 (or 637297796 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 12745955780 in words is "twelve billion, seven hundred forty-five million, nine hundred fifty-five thousand, seven hundred eighty".