12856677990 has 64 divisors (see below), whose sum is σ = 33856595136. Its totient is φ = 3105004032.

The previous prime is 12856677979. The next prime is 12856678067. The reversal of 12856677990 is 9977665821.

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 31 ways as a sum of consecutive naturals, for example, 290329 + ... + 331668.

It is an arithmetic number, because the mean of its divisors is an integer number (529009299).

Almost surely, 2^12856677990 is an apocalyptic number.

12856677990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12856677990 is an abundant number, since it is smaller than the sum of its proper divisors (20999917146).

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

12856677990 is a wasteful number, since it uses less digits than its factorization.

12856677990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622073.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 12856677990 in words is "twelve billion, eight hundred fifty-six million, six hundred seventy-seven thousand, nine hundred ninety".