1665015116065 has 16 divisors (see below), whose sum is σ = 2283471527040. Its totient is φ = 1141713538560.

The previous prime is 1665015116059. The next prime is 1665015116071. The reversal of 1665015116065 is 5606115105661.

It is an interprime number because it is at equal distance from previous prime (1665015116059) and next prime (1665015116071).

It is not a de Polignac number, because 1665015116065 - 2²³ = 1665006727457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5231550 + ... + 5540680.

It is an arithmetic number, because the mean of its divisors is an integer number (142716970440).

Almost surely, 2^{1665015116065} is an apocalyptic number.

It is an amenable number.

1665015116065 is a deficient number, since it is larger than the sum of its proper divisors (618456410975).

1665015116065 is a wasteful number, since it uses less digits than its factorization.

1665015116065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463032.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1665015116065 in words is "one trillion, six hundred sixty-five billion, fifteen million, one hundred sixteen thousand, sixty-five".