1660115110717 has 4 divisors (see below), whose sum is σ = 1897274412256. Its totient is φ = 1422955809180.

The previous prime is 1660115110699. The next prime is 1660115110727. The reversal of 1660115110717 is 7170115110661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1660115110717 - 2²⁷ = 1659980892989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660115110727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118579650759 + ... + 118579650772.

It is an arithmetic number, because the mean of its divisors is an integer number (474318603064).

Almost surely, 2^{1660115110717} is an apocalyptic number.

It is an amenable number.

1660115110717 is a deficient number, since it is larger than the sum of its proper divisors (237159301539).

1660115110717 is an equidigital number, since it uses as much as digits as its factorization.

1660115110717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237159301538.

The product of its (nonzero) digits is 8820, while the sum is 37.

The spelling of 1660115110717 in words is "one trillion, six hundred sixty billion, one hundred fifteen million, one hundred ten thousand, seven hundred seventeen".