18120957499680 has 192 divisors, whose sum is σ = 65405779181568. Its totient is φ = 4131118402560.

The previous prime is 18120957499657. The next prime is 18120957499709. The reversal of 18120957499680 is 8699475902181.

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 31 ways as a sum of consecutive naturals, for example, 5753776 + ... + 8327535.

It is an arithmetic number, because the mean of its divisors is an integer number (340655099904).

Almost surely, 2^{18120957499680} is an apocalyptic number.

18120957499680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18120957499680 is an abundant number, since it is smaller than the sum of its proper divisors (47284821681888).

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

18120957499680 is a wasteful number, since it uses less digits than its factorization.

18120957499680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14081719 (or 14081711 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 69.

The spelling of 18120957499680 in words is "eighteen trillion, one hundred twenty billion, nine hundred fifty-seven million, four hundred ninety-nine thousand, six hundred eighty".