18000034399872 has 160 divisors (see below), whose sum is σ = 61220355340320. Its totient is φ = 5142866950656.

The previous prime is 18000034399843. The next prime is 18000034399943. The reversal of 18000034399872 is 27899343000081.

18000034399872 is a `hidden beast` number, since 180 + 0 + 0 + 0 + 3 + 4 + 399 + 8 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 123935598 + ... + 124080749.

It is an arithmetic number, because the mean of its divisors is an integer number (382627220877).

Almost surely, 2^{18000034399872} is an apocalyptic number.

18000034399872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18000034399872 is an abundant number, since it is smaller than the sum of its proper divisors (43220320940448).

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

18000034399872 is an equidigital number, since it uses as much as digits as its factorization.

18000034399872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248016380 (or 248016359 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 18000034399872 in words is "eighteen trillion, thirty-four million, three hundred ninety-nine thousand, eight hundred seventy-two".