16517373871 has 4 divisors (see below), whose sum is σ = 16622580232. Its totient is φ = 16412167512.

The previous prime is 16517373869. The next prime is 16517373937. The reversal of 16517373871 is 17837371561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16517373871 - 2¹ = 16517373869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16517373811) 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, 52602945 + ... + 52603258.

It is an arithmetic number, because the mean of its divisors is an integer number (4155645058).

Almost surely, 2^16517373871 is an apocalyptic number.

16517373871 is a deficient number, since it is larger than the sum of its proper divisors (105206361).

16517373871 is a wasteful number, since it uses less digits than its factorization.

16517373871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105206360.

The product of its digits is 740880, while the sum is 49.

The spelling of 16517373871 in words is "sixteen billion, five hundred seventeen million, three hundred seventy-three thousand, eight hundred seventy-one".