18444556846780 has 48 divisors (see below), whose sum is σ = 38897924204160. Its totient is φ = 7346520695808.

The previous prime is 18444556846747. The next prime is 18444556846819. The reversal of 18444556846780 is 8764865544481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88292212 + ... + 88500868.

It is an arithmetic number, because the mean of its divisors is an integer number (810373420920).

Almost surely, 2^{18444556846780} is an apocalyptic number.

18444556846780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18444556846780 is an abundant number, since it is smaller than the sum of its proper divisors (20453367357380).

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

18444556846780 is a wasteful number, since it uses less digits than its factorization.

18444556846780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227398 (or 227396 counting only the distinct ones).

The product of its (nonzero) digits is 825753600, while the sum is 70.

The spelling of 18444556846780 in words is "eighteen trillion, four hundred forty-four billion, five hundred fifty-six million, eight hundred forty-six thousand, seven hundred eighty".