665000116139 has 2 divisors, whose sum is σ = 665000116140. Its totient is φ = 665000116138.

The previous prime is 665000116117. The next prime is 665000116163. The reversal of 665000116139 is 931611000566.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665000116139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (665000116169) 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, 332500058069 + 332500058070.

It is an arithmetic number, because the mean of its divisors is an integer number (332500058070).

Almost surely, 2^665000116139 is an apocalyptic number.

665000116139 is a deficient number, since it is larger than the sum of its proper divisors (1).

665000116139 is an equidigital number, since it uses as much as digits as its factorization.

665000116139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 665000116139 in words is "six hundred sixty-five billion, one hundred sixteen thousand, one hundred thirty-nine".