16249042171 has 4 divisors (see below), whose sum is σ = 16809354000. Its totient is φ = 15688730344.

The previous prime is 16249042163. The next prime is 16249042207. The reversal of 16249042171 is 17124094261.

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 16249042171 - 2³ = 16249042163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16249042171.

It is not an unprimeable number, because it can be changed into a prime (16249042111) 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, 280155871 + ... + 280155928.

It is an arithmetic number, because the mean of its divisors is an integer number (4202338500).

Almost surely, 2^16249042171 is an apocalyptic number.

16249042171 is a deficient number, since it is larger than the sum of its proper divisors (560311829).

16249042171 is an equidigital number, since it uses as much as digits as its factorization.

16249042171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560311828.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 16249042171 in words is "sixteen billion, two hundred forty-nine million, forty-two thousand, one hundred seventy-one".