264408838891 has 2 divisors, whose sum is σ = 264408838892. Its totient is φ = 264408838890.

The previous prime is 264408838777. The next prime is 264408838909. The reversal of 264408838891 is 198838804462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264408838891 is a prime.

It is not a weakly prime, because it can be changed into another prime (264408833891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132204419445 + 132204419446.

It is an arithmetic number, because the mean of its divisors is an integer number (132204419446).

Almost surely, 2^264408838891 is an apocalyptic number.

264408838891 is a deficient number, since it is larger than the sum of its proper divisors (1).

264408838891 is an equidigital number, since it uses as much as digits as its factorization.

264408838891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21233664, while the sum is 61.

The spelling of 264408838891 in words is "two hundred sixty-four billion, four hundred eight million, eight hundred thirty-eight thousand, eight hundred ninety-one".