12698548864 has 32 divisors (see below), whose sum is σ = 25914922740. Its totient is φ = 6194411520.

The previous prime is 12698548861. The next prime is 12698548867. The reversal of 12698548864 is 46884589621.

It is an interprime number because it is at equal distance from previous prime (12698548861) and next prime (12698548867).

It can be written as a sum of positive squares in 2 ways, for example, as 10651891264 + 2046657600 = 103208^2 + 45240^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×12698548864² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12698548861) 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, 1204599 + ... + 1215094.

Almost surely, 2^12698548864 is an apocalyptic number.

It is an amenable number.

12698548864 is an abundant number, since it is smaller than the sum of its proper divisors (13216373876).

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

12698548864 is an equidigital number, since it uses as much as digits as its factorization.

12698548864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419748 (or 2419736 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 61.

The spelling of 12698548864 in words is "twelve billion, six hundred ninety-eight million, five hundred forty-eight thousand, eight hundred sixty-four".