16471205117 has 4 divisors (see below), whose sum is σ = 16472064960. Its totient is φ = 16470345276.

The previous prime is 16471205071. The next prime is 16471205129. The reversal of 16471205117 is 71150217461.

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 16471205117 - 2¹⁴ = 16471188733 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 (16471205147) 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, 400517 + ... + 439722.

It is an arithmetic number, because the mean of its divisors is an integer number (4118016240).

Almost surely, 2^16471205117 is an apocalyptic number.

It is an amenable number.

16471205117 is a deficient number, since it is larger than the sum of its proper divisors (859843).

16471205117 is an equidigital number, since it uses as much as digits as its factorization.

16471205117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859842.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 16471205117 in words is "sixteen billion, four hundred seventy-one million, two hundred five thousand, one hundred seventeen".