218034799987 has 2 divisors, whose sum is σ = 218034799988. Its totient is φ = 218034799986.

The previous prime is 218034799979. The next prime is 218034800033. The reversal of 218034799987 is 789997430812.

218034799987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218034799987 - 2³ = 218034799979 is a prime.

It is not a weakly prime, because it can be changed into another prime (218034799187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109017399993 + 109017399994.

It is an arithmetic number, because the mean of its divisors is an integer number (109017399994).

Almost surely, 2^218034799987 is an apocalyptic number.

218034799987 is a deficient number, since it is larger than the sum of its proper divisors (1).

218034799987 is an equidigital number, since it uses as much as digits as its factorization.

218034799987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54867456, while the sum is 67.

The spelling of 218034799987 in words is "two hundred eighteen billion, thirty-four million, seven hundred ninety-nine thousand, nine hundred eighty-seven".