218279953358 has 32 divisors (see below), whose sum is σ = 344510952192. Its totient is φ = 103580755200.

The previous prime is 218279953349. The next prime is 218279953361. The reversal of 218279953358 is 853359972812.

It is a super-2 number, since 2×218279953358² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 218279953358.

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 in 15 ways as a sum of consecutive naturals, for example, 8112848 + ... + 8139708.

It is an arithmetic number, because the mean of its divisors is an integer number (10765967256).

Almost surely, 2^218279953358 is an apocalyptic number.

218279953358 is a deficient number, since it is larger than the sum of its proper divisors (126230998834).

218279953358 is a wasteful number, since it uses less digits than its factorization.

218279953358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29420.

The product of its digits is 32659200, while the sum is 62.

The spelling of 218279953358 in words is "two hundred eighteen billion, two hundred seventy-nine million, nine hundred fifty-three thousand, three hundred fifty-eight".