16015000665 has 32 divisors (see below), whose sum is σ = 26214451200. Its totient is φ = 8345146304.

The previous prime is 16015000591. The next prime is 16015000721. The reversal of 16015000665 is 56600051061.

It is a cyclic number.

It is not a de Polignac number, because 16015000665 - 2¹¹ = 16014998617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394486 + ... + 433184.

It is an arithmetic number, because the mean of its divisors is an integer number (819201600).

Almost surely, 2^16015000665 is an apocalyptic number.

16015000665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16015000665 is a deficient number, since it is larger than the sum of its proper divisors (10199450535).

16015000665 is a wasteful number, since it uses less digits than its factorization.

16015000665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39341.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 16015000665 in words is "sixteen billion, fifteen million, six hundred sixty-five", and thus it is an aban number.