218877422879 has 2 divisors, whose sum is σ = 218877422880. Its totient is φ = 218877422878.

The previous prime is 218877422867. The next prime is 218877422923. The reversal of 218877422879 is 978224778812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218877422879 - 2²⁰ = 218876374303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218877422809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109438711439 + 109438711440.

It is an arithmetic number, because the mean of its divisors is an integer number (109438711440).

Almost surely, 2^218877422879 is an apocalyptic number.

218877422879 is a deficient number, since it is larger than the sum of its proper divisors (1).

218877422879 is an equidigital number, since it uses as much as digits as its factorization.

218877422879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50577408, while the sum is 65.

The spelling of 218877422879 in words is "two hundred eighteen billion, eight hundred seventy-seven million, four hundred twenty-two thousand, eight hundred seventy-nine".