27172697659 has 2 divisors, whose sum is σ = 27172697660. Its totient is φ = 27172697658.

The previous prime is 27172697653. The next prime is 27172697681. The reversal of 27172697659 is 95679627172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27172697659 - 2¹⁷ = 27172566587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27172697597 and 27172697606.

It is not a weakly prime, because it can be changed into another prime (27172697653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13586348829 + 13586348830.

It is an arithmetic number, because the mean of its divisors is an integer number (13586348830).

Almost surely, 2^27172697659 is an apocalyptic number.

27172697659 is a deficient number, since it is larger than the sum of its proper divisors (1).

27172697659 is an equidigital number, since it uses as much as digits as its factorization.

27172697659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20003760, while the sum is 61.

The spelling of 27172697659 in words is "twenty-seven billion, one hundred seventy-two million, six hundred ninety-seven thousand, six hundred fifty-nine".