27661877627 has 2 divisors, whose sum is σ = 27661877628. Its totient is φ = 27661877626.

The previous prime is 27661877611. The next prime is 27661877687. The reversal of 27661877627 is 72677816672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27661877627 - 2⁴ = 27661877611 is a prime.

It is a super-2 number, since 2×27661877627² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27661877687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13830938813 + 13830938814.

It is an arithmetic number, because the mean of its divisors is an integer number (13830938814).

Almost surely, 2^27661877627 is an apocalyptic number.

27661877627 is a deficient number, since it is larger than the sum of its proper divisors (1).

27661877627 is an equidigital number, since it uses as much as digits as its factorization.

27661877627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16595712, while the sum is 59.

The spelling of 27661877627 in words is "twenty-seven billion, six hundred sixty-one million, eight hundred seventy-seven thousand, six hundred twenty-seven".