26264630663 has 4 divisors (see below), whose sum is σ = 26823452640. Its totient is φ = 25705808688.

The previous prime is 26264630633. The next prime is 26264630669. The reversal of 26264630663 is 36603646262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26264630663 - 2⁸ = 26264630407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26264630669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279410918 + ... + 279411011.

It is an arithmetic number, because the mean of its divisors is an integer number (6705863160).

Almost surely, 2^26264630663 is an apocalyptic number.

26264630663 is a deficient number, since it is larger than the sum of its proper divisors (558821977).

26264630663 is an equidigital number, since it uses as much as digits as its factorization.

26264630663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558821976.

The product of its (nonzero) digits is 1119744, while the sum is 44.

The spelling of 26264630663 in words is "twenty-six billion, two hundred sixty-four million, six hundred thirty thousand, six hundred sixty-three".