26624678659 has 2 divisors, whose sum is σ = 26624678660. Its totient is φ = 26624678658.

The previous prime is 26624678651. The next prime is 26624678753. The reversal of 26624678659 is 95687642662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26624678659 - 2³ = 26624678651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26624678597 and 26624678606.

It is not a weakly prime, because it can be changed into another prime (26624678651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13312339329 + 13312339330.

It is an arithmetic number, because the mean of its divisors is an integer number (13312339330).

Almost surely, 2^26624678659 is an apocalyptic number.

26624678659 is a deficient number, since it is larger than the sum of its proper divisors (1).

26624678659 is an equidigital number, since it uses as much as digits as its factorization.

26624678659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 61.

The spelling of 26624678659 in words is "twenty-six billion, six hundred twenty-four million, six hundred seventy-eight thousand, six hundred fifty-nine".