861560790192 has 80 divisors (see below), whose sum is σ = 2480899907680. Its totient is φ = 286269355008.

The previous prime is 861560790149. The next prime is 861560790203. The reversal of 861560790192 is 291097065168.

861560790192 is a `hidden beast` number, since 8 + 6 + 1 + 560 + 79 + 0 + 1 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3050653 + ... + 3321084.

It is an arithmetic number, because the mean of its divisors is an integer number (31011248846).

Almost surely, 2^861560790192 is an apocalyptic number.

It is an amenable number.

861560790192 is an abundant number, since it is smaller than the sum of its proper divisors (1619339117488).

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

861560790192 is a wasteful number, since it uses less digits than its factorization.

861560790192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372067 (or 6372055 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 861560790192 in words is "eight hundred sixty-one billion, five hundred sixty million, seven hundred ninety thousand, one hundred ninety-two".