26641664129923 has 2 divisors, whose sum is σ = 26641664129924. Its totient is φ = 26641664129922.

The previous prime is 26641664129903. The next prime is 26641664129929. The reversal of 26641664129923 is 32992146614662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26641664129923 - 2²⁵ = 26641630575491 is a prime.

It is a super-2 number, since 2×26641664129923² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26641664129929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320832064961 + 13320832064962.

It is an arithmetic number, because the mean of its divisors is an integer number (13320832064962).

Almost surely, 2^{26641664129923} is an apocalyptic number.

26641664129923 is a deficient number, since it is larger than the sum of its proper divisors (1).

26641664129923 is an equidigital number, since it uses as much as digits as its factorization.

26641664129923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40310784, while the sum is 61.

The spelling of 26641664129923 in words is "twenty-six trillion, six hundred forty-one billion, six hundred sixty-four million, one hundred twenty-nine thousand, nine hundred twenty-three".