218942860156 has 6 divisors (see below), whose sum is σ = 383150005280. Its totient is φ = 109471430076.

The previous prime is 218942860139. The next prime is 218942860159. The reversal of 218942860156 is 651068249812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218942860159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27367857516 + ... + 27367857523.

Almost surely, 2^218942860156 is an apocalyptic number.

It is an amenable number.

218942860156 is a deficient number, since it is larger than the sum of its proper divisors (164207145124).

218942860156 is a wasteful number, since it uses less digits than its factorization.

218942860156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54735715043 (or 54735715041 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 218942860156 in words is "two hundred eighteen billion, nine hundred forty-two million, eight hundred sixty thousand, one hundred fifty-six".