15966943806 has 32 divisors (see below), whose sum is σ = 34842931200. Its totient is φ = 4837639680.

The previous prime is 15966943789. The next prime is 15966943841. The reversal of 15966943806 is 60834966951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447390 + ... + 481758.

It is an arithmetic number, because the mean of its divisors is an integer number (1088841600).

Almost surely, 2^15966943806 is an apocalyptic number.

15966943806 is an abundant number, since it is smaller than the sum of its proper divisors (18875987394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15966943806 is a wasteful number, since it uses less digits than its factorization.

15966943806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41424.

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 15966943806 in words is "fifteen billion, nine hundred sixty-six million, nine hundred forty-three thousand, eight hundred six".