12689200816 has 20 divisors (see below), whose sum is σ = 24587178552. Its totient is φ = 6344122496.

The previous prime is 12689200807. The next prime is 12689200831. The reversal of 12689200816 is 61800298621.

It is a happy number.

It is a super-2 number, since 2×12689200816² (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, 298695 + ... + 338521.

Almost surely, 2^12689200816 is an apocalyptic number.

12689200816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12689200816 is a deficient number, since it is larger than the sum of its proper divisors (11897977736).

12689200816 is a wasteful number, since it uses less digits than its factorization.

12689200816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59748 (or 59742 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 12689200816 in words is "twelve billion, six hundred eighty-nine million, two hundred thousand, eight hundred sixteen".