12989400580 has 24 divisors (see below), whose sum is σ = 29376029592. Its totient is φ = 4796086272.

The previous prime is 12989400577. The next prime is 12989400601. The reversal of 12989400580 is 8500498921.

It can be written as a sum of positive squares in 4 ways, for example, as 1854508096 + 11134892484 = 43064^2 + 105522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12989400580.

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, 24979357 + ... + 24979876.

It is an arithmetic number, because the mean of its divisors is an integer number (1224001233).

Almost surely, 2^12989400580 is an apocalyptic number.

12989400580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12989400580 is an abundant number, since it is smaller than the sum of its proper divisors (16386629012).

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

12989400580 is a wasteful number, since it uses less digits than its factorization.

12989400580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49959255 (or 49959253 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 12989400580 in words is "twelve billion, nine hundred eighty-nine million, four hundred thousand, five hundred eighty".