18002886556380 has 48 divisors (see below), whose sum is σ = 54990635301504. Its totient is φ = 4364336134720.

The previous prime is 18002886556339. The next prime is 18002886556423. The reversal of 18002886556380 is 8365568820081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 13638549762 + ... + 13638551081.

It is an arithmetic number, because the mean of its divisors is an integer number (1145638235448).

Almost surely, 2^{18002886556380} is an apocalyptic number.

18002886556380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18002886556380 is an abundant number, since it is smaller than the sum of its proper divisors (36987748745124).

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

18002886556380 is a wasteful number, since it uses less digits than its factorization.

18002886556380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27277100866 (or 27277100864 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 60.

The spelling of 18002886556380 in words is "eighteen trillion, two billion, eight hundred eighty-six million, five hundred fifty-six thousand, three hundred eighty".