43636966940 has 48 divisors (see below), whose sum is σ = 104741683200. Its totient is φ = 14959394112.

The previous prime is 43636966939. The next prime is 43636966943. The reversal of 43636966940 is 4966963634.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43636966943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599131 + ... + 1626189.

It is an arithmetic number, because the mean of its divisors is an integer number (2182118400).

Almost surely, 2^43636966940 is an apocalyptic number.

It is an amenable number.

43636966940 is an abundant number, since it is smaller than the sum of its proper divisors (61104716260).

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

43636966940 is a wasteful number, since it uses less digits than its factorization.

43636966940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38594 (or 38592 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 56.

The spelling of 43636966940 in words is "forty-three billion, six hundred thirty-six million, nine hundred sixty-six thousand, nine hundred forty".