218607126139 has 2 divisors, whose sum is σ = 218607126140. Its totient is φ = 218607126138.

The previous prime is 218607126113. The next prime is 218607126167. The reversal of 218607126139 is 931621706812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218607126139 - 2²⁵ = 218573571707 is a prime.

It is not a weakly prime, because it can be changed into another prime (218607106139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109303563069 + 109303563070.

It is an arithmetic number, because the mean of its divisors is an integer number (109303563070).

Almost surely, 2^218607126139 is an apocalyptic number.

218607126139 is a deficient number, since it is larger than the sum of its proper divisors (1).

218607126139 is an equidigital number, since it uses as much as digits as its factorization.

218607126139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 218607126139 in words is "two hundred eighteen billion, six hundred seven million, one hundred twenty-six thousand, one hundred thirty-nine".