43961791966 has 8 divisors (see below), whose sum is σ = 66042451944. Its totient is φ = 21947641320.

The previous prime is 43961791963. The next prime is 43961792009. The reversal of 43961791966 is 66919716934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43961791961) 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, 16625680 + ... + 16628323.

It is an arithmetic number, because the mean of its divisors is an integer number (8255306493).

Almost surely, 2^43961791966 is an apocalyptic number.

43961791966 is a deficient number, since it is larger than the sum of its proper divisors (22080659978).

43961791966 is a wasteful number, since it uses less digits than its factorization.

43961791966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33254666.

The product of its digits is 13226976, while the sum is 61.

The spelling of 43961791966 in words is "forty-three billion, nine hundred sixty-one million, seven hundred ninety-one thousand, nine hundred sixty-six".