16456312085 has 4 divisors (see below), whose sum is σ = 19747574508. Its totient is φ = 13165049664.

The previous prime is 16456312007. The next prime is 16456312099. The reversal of 16456312085 is 58021365461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58021365461 = 136691 ⋅424471.

It can be written as a sum of positive squares in 2 ways, for example, as 12703769521 + 3752542564 = 112711^2 + 61258^2 .

It is a cyclic number.

It is not a de Polignac number, because 16456312085 - 2⁸ = 16456311829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645631204 + ... + 1645631213.

It is an arithmetic number, because the mean of its divisors is an integer number (4936893627).

Almost surely, 2^16456312085 is an apocalyptic number.

It is an amenable number.

16456312085 is a deficient number, since it is larger than the sum of its proper divisors (3291262423).

16456312085 is an equidigital number, since it uses as much as digits as its factorization.

16456312085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291262422.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 16456312085 in words is "sixteen billion, four hundred fifty-six million, three hundred twelve thousand, eighty-five".