12906972985 has 16 divisors (see below), whose sum is σ = 16407014400. Its totient is φ = 9713707776.

The previous prime is 12906972907. The next prime is 12906973067. The reversal of 12906972985 is 58927960921.

It is a cyclic number.

It is not a de Polignac number, because 12906972985 - 2⁷ = 12906972857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156406 + ... + 224224.

It is an arithmetic number, because the mean of its divisors is an integer number (1025438400).

Almost surely, 2^12906972985 is an apocalyptic number.

It is an amenable number.

12906972985 is a deficient number, since it is larger than the sum of its proper divisors (3500041415).

12906972985 is a wasteful number, since it uses less digits than its factorization.

12906972985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70080.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 12906972985 in words is "twelve billion, nine hundred six million, nine hundred seventy-two thousand, nine hundred eighty-five".