11516170665 has 16 divisors (see below), whose sum is σ = 18467856000. Its totient is φ = 6127963392.

The previous prime is 11516170661. The next prime is 11516170669. The reversal of 11516170665 is 56607161511.

It is an interprime number because it is at equal distance from previous prime (11516170661) and next prime (11516170669).

It is not a de Polignac number, because 11516170665 - 2² = 11516170661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11516170661) 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, 867840 + ... + 881009.

It is an arithmetic number, because the mean of its divisors is an integer number (1154241000).

Almost surely, 2^11516170665 is an apocalyptic number.

11516170665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11516170665 is a deficient number, since it is larger than the sum of its proper divisors (6951685335).

11516170665 is a wasteful number, since it uses less digits than its factorization.

11516170665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749296.

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 11516170665 in words is "eleven billion, five hundred sixteen million, one hundred seventy thousand, six hundred sixty-five".