27641630665579 has 16 divisors (see below), whose sum is σ = 31630079047680. Its totient is φ = 23663101885920.

The previous prime is 27641630665573. The next prime is 27641630665601. The reversal of 27641630665579 is 97556603614672.

It is not a de Polignac number, because 27641630665579 - 2⁹ = 27641630665067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27641630665573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38584014 + ... + 39293884.

It is an arithmetic number, because the mean of its divisors is an integer number (1976879940480).

Almost surely, 2^{27641630665579} is an apocalyptic number.

27641630665579 is a deficient number, since it is larger than the sum of its proper divisors (3988448382101).

27641630665579 is an equidigital number, since it uses as much as digits as its factorization.

27641630665579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716850.

The product of its (nonzero) digits is 342921600, while the sum is 67.

The spelling of 27641630665579 in words is "twenty-seven trillion, six hundred forty-one billion, six hundred thirty million, six hundred sixty-five thousand, five hundred seventy-nine".