7943321966 has 16 divisors (see below), whose sum is σ = 12364755840. Its totient is φ = 3822601440.

The previous prime is 7943321957. The next prime is 7943322011. The reversal of 7943321966 is 6691233497.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197630 + ... + 234401.

It is an arithmetic number, because the mean of its divisors is an integer number (772797240).

Almost surely, 2^7943321966 is an apocalyptic number.

7943321966 is a deficient number, since it is larger than the sum of its proper divisors (4421433874).

7943321966 is a wasteful number, since it uses less digits than its factorization.

7943321966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432379.

The product of its digits is 1469664, while the sum is 50.

The square root of 7943321966 is about 89125.3160779809. The cubic root of 7943321966 is about 1995.2656322240.

The spelling of 7943321966 in words is "seven billion, nine hundred forty-three million, three hundred twenty-one thousand, nine hundred sixty-six".