264502314206491 has 2 divisors, whose sum is σ = 264502314206492. Its totient is φ = 264502314206490.

The previous prime is 264502314206413. The next prime is 264502314206497. The reversal of 264502314206491 is 194602413205462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264502314206491 - 2²⁵ = 264502280652059 is a prime.

It is a super-2 number, since 2×264502314206491² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264502314206497) 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, 132251157103245 + 132251157103246.

It is an arithmetic number, because the mean of its divisors is an integer number (132251157103246).

Almost surely, 2^{264502314206491} is an apocalyptic number.

264502314206491 is a deficient number, since it is larger than the sum of its proper divisors (1).

264502314206491 is an equidigital number, since it uses as much as digits as its factorization.

264502314206491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 264502314206491 in words is "two hundred sixty-four trillion, five hundred two billion, three hundred fourteen million, two hundred six thousand, four hundred ninety-one".