264531490697 has 2 divisors, whose sum is σ = 264531490698. Its totient is φ = 264531490696.

The previous prime is 264531490667. The next prime is 264531490733. The reversal of 264531490697 is 796094135462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214527375241 + 50004115456 = 463171^2 + 223616^2 .

It is a cyclic number.

It is not a de Polignac number, because 264531490697 - 2¹⁸ = 264531228553 is a prime.

It is not a weakly prime, because it can be changed into another prime (264531490607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132265745348 + 132265745349.

It is an arithmetic number, because the mean of its divisors is an integer number (132265745349).

Almost surely, 2^264531490697 is an apocalyptic number.

It is an amenable number.

264531490697 is a deficient number, since it is larger than the sum of its proper divisors (1).

264531490697 is an equidigital number, since it uses as much as digits as its factorization.

264531490697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 264531490697 in words is "two hundred sixty-four billion, five hundred thirty-one million, four hundred ninety thousand, six hundred ninety-seven".