218306253161832 has 64 divisors (see below), whose sum is σ = 595427217408000. Its totient is φ = 66148240386240.

The previous prime is 218306253161819. The next prime is 218306253161849. The reversal of 218306253161832 is 238161352603812.

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 15 ways as a sum of consecutive naturals, for example, 28925058 + ... + 35682929.

It is an arithmetic number, because the mean of its divisors is an integer number (9303550272000).

Almost surely, 2^{218306253161832} is an apocalyptic number.

218306253161832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218306253161832 is an abundant number, since it is smaller than the sum of its proper divisors (377120964246168).

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

218306253161832 is a wasteful number, since it uses less digits than its factorization.

218306253161832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64620806 (or 64620802 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 218306253161832 in words is "two hundred eighteen trillion, three hundred six billion, two hundred fifty-three million, one hundred sixty-one thousand, eight hundred thirty-two".