12689685248 has 36 divisors (see below), whose sum is σ = 25580643648. Its totient is φ = 6282009600.

The previous prime is 12689685167. The next prime is 12689685251. The reversal of 12689685248 is 84258698621.

It is a super-2 number, since 2×12689685248² (a number of 21 digits) contains 22 as substring.

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, 219536 + ... + 271247.

Almost surely, 2^12689685248 is an apocalyptic number.

It is an amenable number.

12689685248 is an abundant number, since it is smaller than the sum of its proper divisors (12890958400).

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

12689685248 is an equidigital number, since it uses as much as digits as its factorization.

12689685248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490900 (or 490886 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 59.

The spelling of 12689685248 in words is "twelve billion, six hundred eighty-nine million, six hundred eighty-five thousand, two hundred forty-eight".