26604697507 has 2 divisors, whose sum is σ = 26604697508. Its totient is φ = 26604697506.

The previous prime is 26604697477. The next prime is 26604697529. The reversal of 26604697507 is 70579640662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26604697507 is a prime.

It is not a weakly prime, because it can be changed into another prime (26604697577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13302348753 + 13302348754.

It is an arithmetic number, because the mean of its divisors is an integer number (13302348754).

Almost surely, 2^26604697507 is an apocalyptic number.

26604697507 is a deficient number, since it is larger than the sum of its proper divisors (1).

26604697507 is an equidigital number, since it uses as much as digits as its factorization.

26604697507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 26604697507 in words is "twenty-six billion, six hundred four million, six hundred ninety-seven thousand, five hundred seven".