16456520065 has 8 divisors (see below), whose sum is σ = 20787183360. Its totient is φ = 12472309872.

The previous prime is 16456520063. The next prime is 16456520111. The reversal of 16456520065 is 56002565461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16456520065 - 2¹ = 16456520063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16456520063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86613169 + ... + 86613358.

It is an arithmetic number, because the mean of its divisors is an integer number (2598397920).

Almost surely, 2^16456520065 is an apocalyptic number.

It is an amenable number.

16456520065 is a deficient number, since it is larger than the sum of its proper divisors (4330663295).

16456520065 is a wasteful number, since it uses less digits than its factorization.

16456520065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173226551.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 16456520065 in words is "sixteen billion, four hundred fifty-six million, five hundred twenty thousand, sixty-five".