18308375792640 has 1408 divisors, whose sum is σ = 71131998873600. Its totient is φ = 4447461703680.

The previous prime is 18308375792639. The next prime is 18308375792669. The reversal of 18308375792640 is 4629757380381.

18308375792640 is a `hidden beast` number, since 1 + 8 + 3 + 0 + 8 + 37 + 579 + 26 + 4 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13393105237 + ... + 13393106603.

It is a 1-persistent number, because it is pandigital, but 2⋅18308375792640 = 36616751585280 is not.

Almost surely, 2^{18308375792640} is an apocalyptic number.

18308375792640 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 18308375792640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35565999436800).

18308375792640 is an abundant number, since it is smaller than the sum of its proper divisors (52823623080960).

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

18308375792640 is a wasteful number, since it uses less digits than its factorization.

18308375792640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 18308375792640 in words is "eighteen trillion, three hundred eight billion, three hundred seventy-five million, seven hundred ninety-two thousand, six hundred forty".