16431161605 has 16 divisors (see below), whose sum is σ = 20079143424. Its totient is φ = 12904591680.

The previous prime is 16431161603. The next prime is 16431161609. The reversal of 16431161605 is 50616113461.

It is not a de Polignac number, because 16431161605 - 2¹ = 16431161603 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 (16431161603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108012 + ... + 211018.

It is an arithmetic number, because the mean of its divisors is an integer number (1254946464).

Almost surely, 2^16431161605 is an apocalyptic number.

It is an amenable number.

16431161605 is a deficient number, since it is larger than the sum of its proper divisors (3647981819).

16431161605 is a wasteful number, since it uses less digits than its factorization.

16431161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103596.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 16431161605 in words is "sixteen billion, four hundred thirty-one million, one hundred sixty-one thousand, six hundred five".