43731457686 has 64 divisors (see below), whose sum is σ = 111085148160. Its totient is φ = 12492325440.

The previous prime is 43731457657. The next prime is 43731457691. The reversal of 43731457686 is 68675413734.

It is a happy number.

43731457686 is a `hidden beast` number, since 4 + 37 + 31 + 4 + 576 + 8 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3274755 + ... + 3288081.

It is an arithmetic number, because the mean of its divisors is an integer number (1735705440).

Almost surely, 2^43731457686 is an apocalyptic number.

43731457686 is an abundant number, since it is smaller than the sum of its proper divisors (67353690474).

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

43731457686 is a wasteful number, since it uses less digits than its factorization.

43731457686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22026 (or 22020 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 43731457686 in words is "forty-three billion, seven hundred thirty-one million, four hundred fifty-seven thousand, six hundred eighty-six".