26886537680655 has 16 divisors (see below), whose sum is σ = 43624354097664. Its totient is φ = 14137522160160.

The previous prime is 26886537680593. The next prime is 26886537680669. The reversal of 26886537680655 is 55608673568862.

It is not a de Polignac number, because 26886537680655 - 2³⁰ = 26885463938831 is a prime.

It is a super-2 number, since 2×26886537680655² (a number of 28 digits) contains 22 as substring.

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, 12622786579 + ... + 12622788708.

It is an arithmetic number, because the mean of its divisors is an integer number (2726522131104).

Almost surely, 2^{26886537680655} is an apocalyptic number.

26886537680655 is a deficient number, since it is larger than the sum of its proper divisors (16737816417009).

26886537680655 is a wasteful number, since it uses less digits than its factorization.

26886537680655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25245575366.

The product of its (nonzero) digits is 3483648000, while the sum is 75.

The spelling of 26886537680655 in words is "twenty-six trillion, eight hundred eighty-six billion, five hundred thirty-seven million, six hundred eighty thousand, six hundred fifty-five".