18545375882799 has 16 divisors (see below), whose sum is σ = 27476042335840. Its totient is φ = 12362948792640.

The previous prime is 18545375882773. The next prime is 18545375882809. The reversal of 18545375882799 is 99728857354581.

18545375882799 is a `hidden beast` number, since 1 + 8 + 5 + 4 + 5 + 3 + 7 + 588 + 27 + 9 + 9 = 666.

It is not a de Polignac number, because 18545375882799 - 2³³ = 18536785948207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18545375882749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17106862 + ... + 18158619.

It is an arithmetic number, because the mean of its divisors is an integer number (1717252645990).

Almost surely, 2^{18545375882799} is an apocalyptic number.

18545375882799 is a deficient number, since it is larger than the sum of its proper divisors (8930666453041).

18545375882799 is a wasteful number, since it uses less digits than its factorization.

18545375882799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35284967 (or 35284961 counting only the distinct ones).

The product of its digits is 6096384000, while the sum is 81.

The spelling of 18545375882799 in words is "eighteen trillion, five hundred forty-five billion, three hundred seventy-five million, eight hundred eighty-two thousand, seven hundred ninety-nine".