16456312417 has 2 divisors, whose sum is σ = 16456312418. Its totient is φ = 16456312416.

The previous prime is 16456312399. The next prime is 16456312441. The reversal of 16456312417 is 71421365461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12612188416 + 3844124001 = 112304^2 + 62001^2 .

It is a cyclic number.

It is not a de Polignac number, because 16456312417 - 2¹⁵ = 16456279649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16456312417.

It is not a weakly prime, because it can be changed into another prime (16456310417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8228156208 + 8228156209.

It is an arithmetic number, because the mean of its divisors is an integer number (8228156209).

Almost surely, 2^16456312417 is an apocalyptic number.

It is an amenable number.

16456312417 is a deficient number, since it is larger than the sum of its proper divisors (1).

16456312417 is an equidigital number, since it uses as much as digits as its factorization.

16456312417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

Adding to 16456312417 its reverse (71421365461), we get a palindrome (87877677878).

The spelling of 16456312417 in words is "sixteen billion, four hundred fifty-six million, three hundred twelve thousand, four hundred seventeen".