218639075900416 has 22 divisors (see below), whose sum is σ = 437064637080320. Its totient is φ = 109319537949696.

The previous prime is 218639075900393. The next prime is 218639075900461. The reversal of 218639075900416 is 614009570936812.

It is a super-2 number, since 2×218639075900416² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 106757360256 + ... + 106757362303.

It is a 1-persistent number, because it is pandigital, but 2⋅218639075900416 = 437278151800832 is not.

Almost surely, 2^{218639075900416} is an apocalyptic number.

It is an amenable number.

218639075900416 is a deficient number, since it is larger than the sum of its proper divisors (218425561179904).

218639075900416 is an equidigital number, since it uses as much as digits as its factorization.

218639075900416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213514722579 (or 213514722561 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 218639075900416 in words is "two hundred eighteen trillion, six hundred thirty-nine billion, seventy-five million, nine hundred thousand, four hundred sixteen".