18354458779116 has 24 divisors (see below), whose sum is σ = 42831781669824. Its totient is φ = 6117479899920.

The previous prime is 18354458779109. The next prime is 18354458779121. The reversal of 18354458779116 is 61197785445381.

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, 84014670 + ... + 84232853.

It is an arithmetic number, because the mean of its divisors is an integer number (1784657569576).

Almost surely, 2^{18354458779116} is an apocalyptic number.

It is an amenable number.

18354458779116 is an abundant number, since it is smaller than the sum of its proper divisors (24477322890708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18354458779116 is a wasteful number, since it uses less digits than its factorization.

18354458779116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168256621 (or 168256619 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 69.

The spelling of 18354458779116 in words is "eighteen trillion, three hundred fifty-four billion, four hundred fifty-eight million, seven hundred seventy-nine thousand, one hundred sixteen".