12998758474816 has 28 divisors (see below), whose sum is σ = 26060333127388. Its totient is φ = 6432375324672.

The previous prime is 12998758474813. The next prime is 12998758474817. The reversal of 12998758474816 is 61847485789921.

It can be written as a sum of positive squares in 2 ways, for example, as 9441460708416 + 3557297766400 = 3072696^2 + 1886080^2 .

It is not an unprimeable number, because it can be changed into a prime (12998758474813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046929881 + ... + 1046942296.

It is an arithmetic number, because the mean of its divisors is an integer number (930726183121).

Almost surely, 2^{12998758474816} is an apocalyptic number.

12998758474816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12998758474816 is an abundant number, since it is smaller than the sum of its proper divisors (13061574652572).

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

12998758474816 is an equidigital number, since it uses as much as digits as its factorization.

12998758474816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093872286 (or 2093872276 counting only the distinct ones).

The product of its digits is 1950842880, while the sum is 79.

The spelling of 12998758474816 in words is "twelve trillion, nine hundred ninety-eight billion, seven hundred fifty-eight million, four hundred seventy-four thousand, eight hundred sixteen".