18519590940032 has 64 divisors (see below), whose sum is σ = 45408612429600. Its totient is φ = 7326431576064.

The previous prime is 18519590939999. The next prime is 18519590940077. The reversal of 18519590940032 is 23004909591581.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×18519590940032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 18519590940032.

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 7 ways as a sum of consecutive naturals, for example, 794957057 + ... + 794980352.

Almost surely, 2^{18519590940032} is an apocalyptic number.

It is an amenable number.

18519590940032 is an abundant number, since it is smaller than the sum of its proper divisors (26889021489568).

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

18519590940032 is a wasteful number, since it uses less digits than its factorization.

18519590940032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589937443 (or 1589937431 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 56.

The spelling of 18519590940032 in words is "eighteen trillion, five hundred nineteen billion, five hundred ninety million, nine hundred forty thousand, thirty-two".