26420664305165 has 16 divisors (see below), whose sum is σ = 35245035065856. Its totient is φ = 18881268782400.

The previous prime is 26420664305159. The next prime is 26420664305201. The reversal of 26420664305165 is 56150346602462.

It is not a de Polignac number, because 26420664305165 - 2²⁸ = 26420395869709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 6555994091 + ... + 6555998120.

It is an arithmetic number, because the mean of its divisors is an integer number (2202814691616).

Almost surely, 2^{26420664305165} is an apocalyptic number.

It is an amenable number.

26420664305165 is a deficient number, since it is larger than the sum of its proper divisors (8824370760691).

26420664305165 is a wasteful number, since it uses less digits than its factorization.

26420664305165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111992260.

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 26420664305165 in words is "twenty-six trillion, four hundred twenty billion, six hundred sixty-four million, three hundred five thousand, one hundred sixty-five".