15716865473 has 2 divisors, whose sum is σ = 15716865474. Its totient is φ = 15716865472.

The previous prime is 15716865467. The next prime is 15716865497. The reversal of 15716865473 is 37456861751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8030310544 + 7686554929 = 89612^2 + 87673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15716865473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15716865403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7858432736 + 7858432737.

It is an arithmetic number, because the mean of its divisors is an integer number (7858432737).

Almost surely, 2^15716865473 is an apocalyptic number.

It is an amenable number.

15716865473 is a deficient number, since it is larger than the sum of its proper divisors (1).

15716865473 is an equidigital number, since it uses as much as digits as its factorization.

15716865473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 53.

The spelling of 15716865473 in words is "fifteen billion, seven hundred sixteen million, eight hundred sixty-five thousand, four hundred seventy-three".