218097980581874 has 8 divisors (see below), whose sum is σ = 327148108519680. Its totient is φ = 109048611075316.

The previous prime is 218097980581841. The next prime is 218097980581879. The reversal of 218097980581874 is 478185089790812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 218097980581795 and 218097980581804.

It is not an unprimeable number, because it can be changed into a prime (218097980581879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188888354 + ... + 190039485.

It is an arithmetic number, because the mean of its divisors is an integer number (40893513564960).

Almost surely, 2^{218097980581874} is an apocalyptic number.

218097980581874 is a deficient number, since it is larger than the sum of its proper divisors (109050127937806).

218097980581874 is a wasteful number, since it uses less digits than its factorization.

218097980581874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379215624.

The product of its (nonzero) digits is 650280960, while the sum is 77.

The spelling of 218097980581874 in words is "two hundred eighteen trillion, ninety-seven billion, nine hundred eighty million, five hundred eighty-one thousand, eight hundred seventy-four".