27586687679 has 2 divisors, whose sum is σ = 27586687680. Its totient is φ = 27586687678.

The previous prime is 27586687649. The next prime is 27586687693. The reversal of 27586687679 is 97678668572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27586687679 is a prime.

It is a super-2 number, since 2×27586687679² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27586687649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13793343839 + 13793343840.

It is an arithmetic number, because the mean of its divisors is an integer number (13793343840).

Almost surely, 2^27586687679 is an apocalyptic number.

27586687679 is a deficient number, since it is larger than the sum of its proper divisors (1).

27586687679 is an equidigital number, since it uses as much as digits as its factorization.

27586687679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 426746880, while the sum is 71.

The spelling of 27586687679 in words is "twenty-seven billion, five hundred eighty-six million, six hundred eighty-seven thousand, six hundred seventy-nine".