18010256607920 has 40 divisors (see below), whose sum is σ = 42244411648896. Its totient is φ = 7140349518848.

The previous prime is 18010256607907. The next prime is 18010256607953. The reversal of 18010256607920 is 2970665201081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 996133472 + ... + 996151551.

Almost surely, 2^{18010256607920} is an apocalyptic number.

18010256607920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18010256607920 is an abundant number, since it is smaller than the sum of its proper divisors (24234155040976).

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

18010256607920 is a wasteful number, since it uses less digits than its factorization.

18010256607920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992285149 (or 1992285143 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 18010256607920 in words is "eighteen trillion, ten billion, two hundred fifty-six million, six hundred seven thousand, nine hundred twenty".