16456312393 has 16 divisors (see below), whose sum is σ = 17229178512. Its totient is φ = 15704064000.

The previous prime is 16456312339. The next prime is 16456312399. The reversal of 16456312393 is 39321365461.

It can be written as a sum of positive squares in 8 ways, for example, as 12167634249 + 4288678144 = 110307^2 + 65488^2 .

It is a cyclic number.

It is not a de Polignac number, because 16456312393 - 2¹⁷ = 16456181321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16456312399) 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, 434505 + ... + 470857.

It is an arithmetic number, because the mean of its divisors is an integer number (1076823657).

Almost surely, 2^16456312393 is an apocalyptic number.

It is an amenable number.

16456312393 is a deficient number, since it is larger than the sum of its proper divisors (772866119).

16456312393 is a wasteful number, since it uses less digits than its factorization.

16456312393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36636.

The product of its digits is 349920, while the sum is 43.

The spelling of 16456312393 in words is "sixteen billion, four hundred fifty-six million, three hundred twelve thousand, three hundred ninety-three".