16315145217 has 48 divisors (see below), whose sum is σ = 28257715200. Its totient is φ = 8874230400.

The previous prime is 16315145173. The next prime is 16315145219. The reversal of 16315145217 is 71254151361.

16315145217 is a `hidden beast` number, since 1 + 631 + 5 + 1 + 4 + 5 + 2 + 17 = 666.

It is not a de Polignac number, because 16315145217 - 2¹⁴ = 16315128833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16315145219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50659 + ... + 187607.

It is an arithmetic number, because the mean of its divisors is an integer number (588702400).

Almost surely, 2^16315145217 is an apocalyptic number.

It is an amenable number.

16315145217 is a deficient number, since it is larger than the sum of its proper divisors (11942569983).

16315145217 is a wasteful number, since it uses less digits than its factorization.

16315145217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137054 (or 137051 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

Adding to 16315145217 its reverse (71254151361), we get a palindrome (87569296578).

The spelling of 16315145217 in words is "sixteen billion, three hundred fifteen million, one hundred forty-five thousand, two hundred seventeen".