26623054091 has 2 divisors, whose sum is σ = 26623054092. Its totient is φ = 26623054090.

The previous prime is 26623054079. The next prime is 26623054177. The reversal of 26623054091 is 19045032662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26623054091 is a prime.

It is not a weakly prime, because it can be changed into another prime (26623053091) 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, 13311527045 + 13311527046.

It is an arithmetic number, because the mean of its divisors is an integer number (13311527046).

Almost surely, 2^26623054091 is an apocalyptic number.

26623054091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26623054091 is an equidigital number, since it uses as much as digits as its factorization.

26623054091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 26623054091 in words is "twenty-six billion, six hundred twenty-three million, fifty-four thousand, ninety-one".