12861946080 has 72 divisors (see below), whose sum is σ = 43891395912. Its totient is φ = 3429851904.

The previous prime is 12861946079. The next prime is 12861946093. The reversal of 12861946080 is 8064916821.

12861946080 is a `hidden beast` number, since 1 + 28 + 6 + 19 + 4 + 608 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4464514 + ... + 4467393.

It is an arithmetic number, because the mean of its divisors is an integer number (609602721).

Almost surely, 2^12861946080 is an apocalyptic number.

12861946080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12861946080 is an abundant number, since it is smaller than the sum of its proper divisors (31029449832).

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

12861946080 is a wasteful number, since it uses less digits than its factorization.

12861946080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8931928 (or 8931917 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 12861946080 in words is "twelve billion, eight hundred sixty-one million, nine hundred forty-six thousand, eighty".