20018336870184 has 64 divisors (see below), whose sum is σ = 51739337571840. Its totient is φ = 6447638849280.

The previous prime is 20018336870179. The next prime is 20018336870209. The reversal of 20018336870184 is 48107863381002.

It is a super-2 number, since 2×20018336870184² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 20116287 + ... + 21087950.

It is an arithmetic number, because the mean of its divisors is an integer number (808427149560).

Almost surely, 2^{20018336870184} is an apocalyptic number.

20018336870184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20018336870184 is an abundant number, since it is smaller than the sum of its proper divisors (31721000701656).

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

20018336870184 is a wasteful number, since it uses less digits than its factorization.

20018336870184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41204930 (or 41204926 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 20018336870184 in words is "twenty trillion, eighteen billion, three hundred thirty-six million, eight hundred seventy thousand, one hundred eighty-four".