12697448860 has 12 divisors (see below), whose sum is σ = 26664642648. Its totient is φ = 5078979536.

The previous prime is 12697448857. The next prime is 12697448891. The reversal of 12697448860 is 6884479621.

It is a happy number.

It is a super-2 number, since 2×12697448860² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317436202 + ... + 317436241.

It is an arithmetic number, because the mean of its divisors is an integer number (2222053554).

Almost surely, 2^12697448860 is an apocalyptic number.

12697448860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12697448860 is an abundant number, since it is smaller than the sum of its proper divisors (13967193788).

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

12697448860 is a wasteful number, since it uses less digits than its factorization.

12697448860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634872452 (or 634872450 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 12697448860 in words is "twelve billion, six hundred ninety-seven million, four hundred forty-eight thousand, eight hundred sixty".