12898990806 has 16 divisors (see below), whose sum is σ = 27782441904. Its totient is φ = 3968920224.

The previous prime is 12898990777. The next prime is 12898990831. The reversal of 12898990806 is 60809989821.

It is a self number, because there is not a number n which added to its sum of digits gives 12898990806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82685761 + ... + 82685916.

It is an arithmetic number, because the mean of its divisors is an integer number (1736402619).

Almost surely, 2^12898990806 is an apocalyptic number.

12898990806 is an abundant number, since it is smaller than the sum of its proper divisors (14883451098).

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

12898990806 is a wasteful number, since it uses less digits than its factorization.

12898990806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165371695.

The product of its (nonzero) digits is 4478976, while the sum is 60.

The spelling of 12898990806 in words is "twelve billion, eight hundred ninety-eight million, nine hundred ninety thousand, eight hundred six".