18542621740608 has 168 divisors, whose sum is σ = 63938739808320. Its totient is φ = 5019055488000.

The previous prime is 18542621740607. The next prime is 18542621740697. The reversal of 18542621740608 is 80604712624581.

18542621740608 is a `hidden beast` number, since 1 + 8 + 5 + 4 + 2 + 6 + 21 + 7 + 4 + 0 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (18542621740607) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 120946143 + ... + 121099358.

Almost surely, 2^{18542621740608} is an apocalyptic number.

18542621740608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18542621740608 is an abundant number, since it is smaller than the sum of its proper divisors (45396118067712).

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

18542621740608 is a wasteful number, since it uses less digits than its factorization.

18542621740608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242045545 (or 242045532 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 18542621740608 in words is "eighteen trillion, five hundred forty-two billion, six hundred twenty-one million, seven hundred forty thousand, six hundred eight".