18500680401880 has 96 divisors (see below), whose sum is σ = 43044465698640. Its totient is φ = 7156087948800.

The previous prime is 18500680401829. The next prime is 18500680401899. The reversal of 18500680401880 is 8810408600581.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7889530 + ... + 9962230.

Almost surely, 2^{18500680401880} is an apocalyptic number.

18500680401880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18500680401880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21522232849320).

18500680401880 is an abundant number, since it is smaller than the sum of its proper divisors (24543785296760).

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

18500680401880 is a wasteful number, since it uses less digits than its factorization.

18500680401880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072949 (or 2072908 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 49.

The spelling of 18500680401880 in words is "eighteen trillion, five hundred billion, six hundred eighty million, four hundred one thousand, eight hundred eighty".