262638765139 has 2 divisors, whose sum is σ = 262638765140. Its totient is φ = 262638765138.

The previous prime is 262638765019. The next prime is 262638765163. The reversal of 262638765139 is 931567836262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 262638765139 - 2⁹ = 262638764627 is a prime.

It is not a weakly prime, because it can be changed into another prime (262638766139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131319382569 + 131319382570.

It is an arithmetic number, because the mean of its divisors is an integer number (131319382570).

Almost surely, 2^262638765139 is an apocalyptic number.

262638765139 is a deficient number, since it is larger than the sum of its proper divisors (1).

262638765139 is an equidigital number, since it uses as much as digits as its factorization.

262638765139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 58.

The spelling of 262638765139 in words is "two hundred sixty-two billion, six hundred thirty-eight million, seven hundred sixty-five thousand, one hundred thirty-nine".