16171905903 has 16 divisors (see below), whose sum is σ = 21642985056. Its totient is φ = 10741086720.

The previous prime is 16171905859. The next prime is 16171905907. The reversal of 16171905903 is 30950917161.

It is not a de Polignac number, because 16171905903 - 2¹⁴ = 16171889519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16171905907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454073 + ... + 2460653.

It is an arithmetic number, because the mean of its divisors is an integer number (1352686566).

Almost surely, 2^16171905903 is an apocalyptic number.

16171905903 is a deficient number, since it is larger than the sum of its proper divisors (5471079153).

16171905903 is a wasteful number, since it uses less digits than its factorization.

16171905903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514.

The product of its (nonzero) digits is 51030, while the sum is 42.

The spelling of 16171905903 in words is "sixteen billion, one hundred seventy-one million, nine hundred five thousand, nine hundred three".