264401434612663 has 2 divisors, whose sum is σ = 264401434612664. Its totient is φ = 264401434612662.

The previous prime is 264401434612573. The next prime is 264401434612673. The reversal of 264401434612663 is 366216434104462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264401434612663 - 2⁹ = 264401434612151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264401434612663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264401434612673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132200717306331 + 132200717306332.

It is an arithmetic number, because the mean of its divisors is an integer number (132200717306332).

Almost surely, 2^{264401434612663} is an apocalyptic number.

264401434612663 is a deficient number, since it is larger than the sum of its proper divisors (1).

264401434612663 is an equidigital number, since it uses as much as digits as its factorization.

264401434612663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11943936, while the sum is 52.

The spelling of 264401434612663 in words is "two hundred sixty-four trillion, four hundred one billion, four hundred thirty-four million, six hundred twelve thousand, six hundred sixty-three".