18059776840 has 32 divisors (see below), whose sum is σ = 46439426880. Its totient is φ = 6191923392.

The previous prime is 18059776807. The next prime is 18059776841. The reversal of 18059776840 is 4867795081.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18059776841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32249322 + ... + 32249881.

It is an arithmetic number, because the mean of its divisors is an integer number (1451232090).

Almost surely, 2^18059776840 is an apocalyptic number.

18059776840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18059776840 is an abundant number, since it is smaller than the sum of its proper divisors (28379650040).

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

18059776840 is a wasteful number, since it uses less digits than its factorization.

18059776840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64499221 (or 64499217 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 18059776840 in words is "eighteen billion, fifty-nine million, seven hundred seventy-six thousand, eight hundred forty".