43666983368 has 16 divisors (see below), whose sum is σ = 81881619660. Its totient is φ = 21831884800.

The previous prime is 43666983331. The next prime is 43666983397. The reversal of 43666983368 is 86338966634.

It can be written as a sum of positive squares in 2 ways, for example, as 43481424484 + 185558884 = 208522^2 + 13622^2 .

It is a super-2 number, since 2×43666983368² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43666983368.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81173 + ... + 306468.

Almost surely, 2^43666983368 is an apocalyptic number.

It is an amenable number.

43666983368 is a deficient number, since it is larger than the sum of its proper divisors (38214636292).

43666983368 is a wasteful number, since it uses less digits than its factorization.

43666983368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401728 (or 401724 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 62.

The spelling of 43666983368 in words is "forty-three billion, six hundred sixty-six million, nine hundred eighty-three thousand, three hundred sixty-eight".