18561760800842 has 16 divisors (see below), whose sum is σ = 32015377090752. Its totient is φ = 7906236413760.

The previous prime is 18561760800827. The next prime is 18561760800887. The reversal of 18561760800842 is 24800806716581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4066991759 + ... + 4066996322.

It is an arithmetic number, because the mean of its divisors is an integer number (2000961068172).

Almost surely, 2^{18561760800842} is an apocalyptic number.

18561760800842 is a deficient number, since it is larger than the sum of its proper divisors (13453616289910).

18561760800842 is a wasteful number, since it uses less digits than its factorization.

18561760800842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8133988253.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 18561760800842 in words is "eighteen trillion, five hundred sixty-one billion, seven hundred sixty million, eight hundred thousand, eight hundred forty-two".