26464371605129 has 2 divisors, whose sum is σ = 26464371605130. Its totient is φ = 26464371605128.

The previous prime is 26464371605059. The next prime is 26464371605167. The reversal of 26464371605129 is 92150617346462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19706851777600 + 6757519827529 = 4439240^2 + 2599523^2 .

It is a cyclic number.

It is not a de Polignac number, because 26464371605129 - 2²⁰ = 26464370556553 is a prime.

It is not a weakly prime, because it can be changed into another prime (26464371605629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13232185802564 + 13232185802565.

It is an arithmetic number, because the mean of its divisors is an integer number (13232185802565).

Almost surely, 2^{26464371605129} is an apocalyptic number.

It is an amenable number.

26464371605129 is a deficient number, since it is larger than the sum of its proper divisors (1).

26464371605129 is an equidigital number, since it uses as much as digits as its factorization.

26464371605129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 26464371605129 in words is "twenty-six trillion, four hundred sixty-four billion, three hundred seventy-one million, six hundred five thousand, one hundred twenty-nine".