26634649163 has 2 divisors, whose sum is σ = 26634649164. Its totient is φ = 26634649162.

The previous prime is 26634649157. The next prime is 26634649193. The reversal of 26634649163 is 36194643662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26634649163 - 2⁴ = 26634649147 is a prime.

It is not a weakly prime, because it can be changed into another prime (26634649123) 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, 13317324581 + 13317324582.

It is an arithmetic number, because the mean of its divisors is an integer number (13317324582).

Almost surely, 2^26634649163 is an apocalyptic number.

26634649163 is a deficient number, since it is larger than the sum of its proper divisors (1).

26634649163 is an equidigital number, since it uses as much as digits as its factorization.

26634649163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 50.

The spelling of 26634649163 in words is "twenty-six billion, six hundred thirty-four million, six hundred forty-nine thousand, one hundred sixty-three".