218768936898 has 32 divisors (see below), whose sum is σ = 466656997824. Its totient is φ = 68132413952.

The previous prime is 218768936891. The next prime is 218768936899. The reversal of 218768936898 is 898639867812.

It is a super-2 number, since 2×218768936898² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218768936891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7813740 + ... + 7841687.

It is an arithmetic number, because the mean of its divisors is an integer number (14583031182).

Almost surely, 2^218768936898 is an apocalyptic number.

218768936898 is an abundant number, since it is smaller than the sum of its proper divisors (247888060926).

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

218768936898 is a wasteful number, since it uses less digits than its factorization.

218768936898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15655586.

The product of its digits is 501645312, while the sum is 75.

The spelling of 218768936898 in words is "two hundred eighteen billion, seven hundred sixty-eight million, nine hundred thirty-six thousand, eight hundred ninety-eight".