18557774343 has 12 divisors (see below), whose sum is σ = 26955428760. Its totient is φ = 12302732016.

The previous prime is 18557774341. The next prime is 18557774371. The reversal of 18557774343 is 34347775581.

18557774343 is a `hidden beast` number, since 1 + 8 + 557 + 7 + 7 + 43 + 43 = 666.

It is not a de Polignac number, because 18557774343 - 2¹ = 18557774341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18557774343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18557774341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5758096 + ... + 5761317.

It is an arithmetic number, because the mean of its divisors is an integer number (2246285730).

Almost surely, 2^18557774343 is an apocalyptic number.

18557774343 is a deficient number, since it is larger than the sum of its proper divisors (8397654417).

18557774343 is a wasteful number, since it uses less digits than its factorization.

18557774343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11519598 (or 11519595 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 18557774343 in words is "eighteen billion, five hundred fifty-seven million, seven hundred seventy-four thousand, three hundred forty-three".