12870991936 has 112 divisors (see below), whose sum is σ = 28388828160. Its totient is φ = 5740997120.

The previous prime is 12870991891. The next prime is 12870991949. The reversal of 12870991936 is 63919907821.

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, 9757485 + ... + 9758803.

It is an arithmetic number, because the mean of its divisors is an integer number (253471680).

Almost surely, 2^12870991936 is an apocalyptic number.

12870991936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870991936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14194414080).

12870991936 is an abundant number, since it is smaller than the sum of its proper divisors (15517836224).

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

12870991936 is a wasteful number, since it uses less digits than its factorization.

12870991936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 12870991936 in words is "twelve billion, eight hundred seventy million, nine hundred ninety-one thousand, nine hundred thirty-six".