18485854556373 has 24 divisors (see below), whose sum is σ = 26762255956800. Its totient is φ = 12295997683200.

The previous prime is 18485854556359. The next prime is 18485854556413. The reversal of 18485854556373 is 37365545858481.

18485854556373 is a `hidden beast` number, since 1 + 8 + 4 + 8 + 5 + 8 + 54 + 5 + 563 + 7 + 3 = 666.

It is not a de Polignac number, because 18485854556373 - 2⁵ = 18485854556341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18485854556333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134913048 + ... + 135049998.

It is an arithmetic number, because the mean of its divisors is an integer number (1115093998200).

Almost surely, 2^{18485854556373} is an apocalyptic number.

It is an amenable number.

18485854556373 is a deficient number, since it is larger than the sum of its proper divisors (8276401400427).

18485854556373 is a wasteful number, since it uses less digits than its factorization.

18485854556373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170809 (or 170806 counting only the distinct ones).

The product of its digits is 1935360000, while the sum is 72.

The spelling of 18485854556373 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred fifty-four million, five hundred fifty-six thousand, three hundred seventy-three".