18556062038020 has 48 divisors (see below), whose sum is σ = 44433792003888. Its totient is φ = 6448441466880.

The previous prime is 18556062037979. The next prime is 18556062038053. The reversal of 18556062038020 is 2083026065581.

It can be written as a sum of positive squares in 8 ways, for example, as 2957464393984 + 15598597644036 = 1719728^2 + 3949506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2099097621 + ... + 2099106460.

It is an arithmetic number, because the mean of its divisors is an integer number (925704000081).

Almost surely, 2^{18556062038020} is an apocalyptic number.

18556062038020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18556062038020 is an abundant number, since it is smaller than the sum of its proper divisors (25877729965868).

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

18556062038020 is a wasteful number, since it uses less digits than its factorization.

18556062038020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198204120 (or 4198204118 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 18556062038020 in words is "eighteen trillion, five hundred fifty-six billion, sixty-two million, thirty-eight thousand, twenty".