100660565065 has 8 divisors (see below), whose sum is σ = 122149899720. Its totient is φ = 79623637632.

The previous prime is 100660565041. The next prime is 100660565069. The reversal of 100660565065 is 560565066001.

It can be written as a sum of positive squares in 4 ways, for example, as 15925430416 + 84735134649 = 126196^2 + 291093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100660565065 - 2²¹ = 100658467913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100660565069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113101314 + ... + 113102203.

It is an arithmetic number, because the mean of its divisors is an integer number (15268737465).

Almost surely, 2^100660565065 is an apocalyptic number.

It is an amenable number.

100660565065 is a deficient number, since it is larger than the sum of its proper divisors (21489334655).

100660565065 is an equidigital number, since it uses as much as digits as its factorization.

100660565065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226203611.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 100660565065 in words is "one hundred billion, six hundred sixty million, five hundred sixty-five thousand, sixty-five".