18188005505046 has 64 divisors (see below), whose sum is σ = 41263477920000. Its totient is φ = 5298229270656.

The previous prime is 18188005505041. The next prime is 18188005505071. The reversal of 18188005505046 is 64050550088181.

It is a self number, because there is not a number n which added to its sum of digits gives 18188005505046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18188005505041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1872081 + ... + 6315116.

It is an arithmetic number, because the mean of its divisors is an integer number (644741842500).

Almost surely, 2^{18188005505046} is an apocalyptic number.

18188005505046 is an abundant number, since it is smaller than the sum of its proper divisors (23075472414954).

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

18188005505046 is a wasteful number, since it uses less digits than its factorization.

18188005505046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8188733.

The product of its (nonzero) digits is 1536000, while the sum is 51.

The spelling of 18188005505046 in words is "eighteen trillion, one hundred eighty-eight billion, five million, five hundred five thousand, forty-six".