264271391999 has 2 divisors, whose sum is σ = 264271392000. Its totient is φ = 264271391998.

The previous prime is 264271391933. The next prime is 264271392013. The reversal of 264271391999 is 999193172462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264271391999 - 2³² = 259976424703 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264271391399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132135695999 + 132135696000.

It is an arithmetic number, because the mean of its divisors is an integer number (132135696000).

Almost surely, 2^264271391999 is an apocalyptic number.

264271391999 is a deficient number, since it is larger than the sum of its proper divisors (1).

264271391999 is an equidigital number, since it uses as much as digits as its factorization.

264271391999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13226976, while the sum is 62.

The spelling of 264271391999 in words is "two hundred sixty-four billion, two hundred seventy-one million, three hundred ninety-one thousand, nine hundred ninety-nine".