12990929985 has 128 divisors (see below), whose sum is σ = 25689484800. Its totient is φ = 6176010240.

The previous prime is 12990929977. The next prime is 12990930019. The reversal of 12990929985 is 58992909921.

It is not a de Polignac number, because 12990929985 - 2³ = 12990929977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31762461 + ... + 31762869.

It is an arithmetic number, because the mean of its divisors is an integer number (200699100).

Almost surely, 2^12990929985 is an apocalyptic number.

12990929985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12990929985 is a deficient number, since it is larger than the sum of its proper divisors (12698554815).

12990929985 is a wasteful number, since it uses less digits than its factorization.

12990929985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 63.

The spelling of 12990929985 in words is "twelve billion, nine hundred ninety million, nine hundred twenty-nine thousand, nine hundred eighty-five".