27645017107 has 2 divisors, whose sum is σ = 27645017108. Its totient is φ = 27645017106.

The previous prime is 27645017089. The next prime is 27645017129. The reversal of 27645017107 is 70171054672.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27645017107 - 2²³ = 27636628499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27645017107.

It is not a weakly prime, because it can be changed into another prime (27645017507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13822508553 + 13822508554.

It is an arithmetic number, because the mean of its divisors is an integer number (13822508554).

Almost surely, 2^27645017107 is an apocalyptic number.

27645017107 is a deficient number, since it is larger than the sum of its proper divisors (1).

27645017107 is an equidigital number, since it uses as much as digits as its factorization.

27645017107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 27645017107 in words is "twenty-seven billion, six hundred forty-five million, seventeen thousand, one hundred seven".