26727855681 has 16 divisors (see below), whose sum is σ = 35697778688. Its totient is φ = 17788280400.

The previous prime is 26727855629. The next prime is 26727855689. The reversal of 26727855681 is 18655872762.

It is not a de Polignac number, because 26727855681 - 2⁹ = 26727855169 is a prime.

It is a super-2 number, since 2×26727855681² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26727855689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6797286 + ... + 6801216.

It is an arithmetic number, because the mean of its divisors is an integer number (2231111168).

Almost surely, 2^26727855681 is an apocalyptic number.

It is an amenable number.

26727855681 is a deficient number, since it is larger than the sum of its proper divisors (8969923007).

26727855681 is a wasteful number, since it uses less digits than its factorization.

26727855681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7212.

The product of its digits is 11289600, while the sum is 57.

The spelling of 26727855681 in words is "twenty-six billion, seven hundred twenty-seven million, eight hundred fifty-five thousand, six hundred eighty-one".