218199054559 has 2 divisors, whose sum is σ = 218199054560. Its totient is φ = 218199054558.

The previous prime is 218199054523. The next prime is 218199054643. The reversal of 218199054559 is 955450991812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218199054559 - 2²⁵ = 218165500127 is a prime.

It is a super-2 number, since 2×218199054559² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218199054509) by changing a digit.

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 as a sum of consecutive naturals, namely, 109099527279 + 109099527280.

It is an arithmetic number, because the mean of its divisors is an integer number (109099527280).

Almost surely, 2^218199054559 is an apocalyptic number.

218199054559 is a deficient number, since it is larger than the sum of its proper divisors (1).

218199054559 is an equidigital number, since it uses as much as digits as its factorization.

218199054559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832000, while the sum is 58.

The spelling of 218199054559 in words is "two hundred eighteen billion, one hundred ninety-nine million, fifty-four thousand, five hundred fifty-nine".