16757213523217 has 4 divisors (see below), whose sum is σ = 16757335168576. Its totient is φ = 16757091877860.

The previous prime is 16757213523137. The next prime is 16757213523223. The reversal of 16757213523217 is 71232531275761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16757213523217 - 2²³ = 16757205134609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16757213523517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60615813 + ... + 60891634.

It is an arithmetic number, because the mean of its divisors is an integer number (4189333792144).

Almost surely, 2^{16757213523217} is an apocalyptic number.

It is an amenable number.

16757213523217 is a deficient number, since it is larger than the sum of its proper divisors (121645359).

16757213523217 is a wasteful number, since it uses less digits than its factorization.

16757213523217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121645358.

The product of its digits is 3704400, while the sum is 52.

Adding to 16757213523217 its reverse (71232531275761), we get a palindrome (87989744798978).

The spelling of 16757213523217 in words is "sixteen trillion, seven hundred fifty-seven billion, two hundred thirteen million, five hundred twenty-three thousand, two hundred seventeen".