26227612665 has 36 divisors (see below), whose sum is σ = 48292712364. Its totient is φ = 13165226496.

The previous prime is 26227612601. The next prime is 26227612693. The reversal of 26227612665 is 56621672262.

26227612665 is a `hidden beast` number, since 2 + 6 + 2 + 27 + 612 + 6 + 6 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 6408322704 + 19819289961 = 80052^2 + 140781^2 .

It is not a de Polignac number, because 26227612665 - 2⁶ = 26227612601 is a prime.

It is a super-2 number, since 2×26227612665² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26227612665.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 995362 + ... + 1021371.

Almost surely, 2^26227612665 is an apocalyptic number.

It is an amenable number.

26227612665 is a deficient number, since it is larger than the sum of its proper divisors (22065099699).

26227612665 is a wasteful number, since it uses less digits than its factorization.

26227612665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016778 (or 2016758 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 26227612665 in words is "twenty-six billion, two hundred twenty-seven million, six hundred twelve thousand, six hundred sixty-five".