26386418979965 has 16 divisors (see below), whose sum is σ = 34542321310656. Its totient is φ = 19190067283200.

The previous prime is 26386418979931. The next prime is 26386418980043. The reversal of 26386418979965 is 56997981468362.

It is not a de Polignac number, because 26386418979965 - 2¹² = 26386418975869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34616234 + ... + 35370276.

It is an arithmetic number, because the mean of its divisors is an integer number (2158895081916).

Almost surely, 2^{26386418979965} is an apocalyptic number.

It is an amenable number.

26386418979965 is a deficient number, since it is larger than the sum of its proper divisors (8155902330691).

26386418979965 is a wasteful number, since it uses less digits than its factorization.

26386418979965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390300.

The product of its digits is 8465264640, while the sum is 83.

The spelling of 26386418979965 in words is "twenty-six trillion, three hundred eighty-six billion, four hundred eighteen million, nine hundred seventy-nine thousand, nine hundred sixty-five".