18890317085756 has 12 divisors (see below), whose sum is σ = 33864348922320. Its totient is φ = 9214788822240.

The previous prime is 18890317085729. The next prime is 18890317085771. The reversal of 18890317085756 is 65758071309881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57592429976 + ... + 57592430303.

It is an arithmetic number, because the mean of its divisors is an integer number (2822029076860).

Almost surely, 2^{18890317085756} is an apocalyptic number.

It is an amenable number.

18890317085756 is a deficient number, since it is larger than the sum of its proper divisors (14974031836564).

18890317085756 is a wasteful number, since it uses less digits than its factorization.

18890317085756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115184860324 (or 115184860322 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 68.

The spelling of 18890317085756 in words is "eighteen trillion, eight hundred ninety billion, three hundred seventeen million, eighty-five thousand, seven hundred fifty-six".