26556272235565 has 16 divisors (see below), whose sum is σ = 32718473798976. Its totient is φ = 20680059088000.

The previous prime is 26556272235463. The next prime is 26556272235599. The reversal of 26556272235565 is 56553227265562.

It is a de Polignac number, because none of the positive numbers 2^k-26556272235565 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, 146120011 + ... + 146301640.

It is an arithmetic number, because the mean of its divisors is an integer number (2044904612436).

Almost surely, 2^{26556272235565} is an apocalyptic number.

It is an amenable number.

26556272235565 is a deficient number, since it is larger than the sum of its proper divisors (6162201563411).

26556272235565 is a wasteful number, since it uses less digits than its factorization.

26556272235565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292422140.

The product of its digits is 226800000, while the sum is 61.

The spelling of 26556272235565 in words is "twenty-six trillion, five hundred fifty-six billion, two hundred seventy-two million, two hundred thirty-five thousand, five hundred sixty-five".