26634649127 has 2 divisors, whose sum is σ = 26634649128. Its totient is φ = 26634649126.

The previous prime is 26634649123. The next prime is 26634649147. The reversal of 26634649127 is 72194643662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26634649127 - 2² = 26634649123 is a prime.

It is a congruent number.

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, 13317324563 + 13317324564.

It is an arithmetic number, because the mean of its divisors is an integer number (13317324564).

Almost surely, 2^26634649127 is an apocalyptic number.

26634649127 is a deficient number, since it is larger than the sum of its proper divisors (1).

26634649127 is an equidigital number, since it uses as much as digits as its factorization.

26634649127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 50.

The spelling of 26634649127 in words is "twenty-six billion, six hundred thirty-four million, six hundred forty-nine thousand, one hundred twenty-seven".