12986618680 has 128 divisors (see below), whose sum is σ = 33867694080. Its totient is φ = 4389880320.

The previous prime is 12986618663. The next prime is 12986618681. The reversal of 12986618680 is 8681668921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12986618681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6150825 + ... + 6152935.

It is an arithmetic number, because the mean of its divisors is an integer number (264591360).

Almost surely, 2^12986618680 is an apocalyptic number.

12986618680 is a gapful number since it is divisible by the number (10) 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 12986618680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16933847040).

12986618680 is an abundant number, since it is smaller than the sum of its proper divisors (20881075400).

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

12986618680 is a wasteful number, since it uses less digits than its factorization.

12986618680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 12986618680 in words is "twelve billion, nine hundred eighty-six million, six hundred eighteen thousand, six hundred eighty".