43750139686 has 16 divisors (see below), whose sum is σ = 72571840848. Its totient is φ = 19614009600.

The previous prime is 43750139663. The next prime is 43750139717. The reversal of 43750139686 is 68693105734.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13619235 + ... + 13622446.

It is an arithmetic number, because the mean of its divisors is an integer number (4535740053).

Almost surely, 2^43750139686 is an apocalyptic number.

43750139686 is a deficient number, since it is larger than the sum of its proper divisors (28821701162).

43750139686 is a wasteful number, since it uses less digits than its factorization.

43750139686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27241767.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 43750139686 in words is "forty-three billion, seven hundred fifty million, one hundred thirty-nine thousand, six hundred eighty-six".