1166116500065 has 64 divisors (see below), whose sum is σ = 1627547904000. Its totient is φ = 793152391680.

The previous prime is 1166116500053. The next prime is 1166116500079. The reversal of 1166116500065 is 5600056116611.

It is not a de Polignac number, because 1166116500065 - 2⁴ = 1166116500049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60164546 + ... + 60183924.

It is an arithmetic number, because the mean of its divisors is an integer number (25430436000).

Almost surely, 2^{1166116500065} is an apocalyptic number.

It is an amenable number.

1166116500065 is a deficient number, since it is larger than the sum of its proper divisors (461431403935).

1166116500065 is a wasteful number, since it uses less digits than its factorization.

1166116500065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20150.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1166116500065 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, five hundred thousand, sixty-five".