43748638717 has 16 divisors (see below), whose sum is σ = 51400952320. Its totient is φ = 36448973568.

The previous prime is 43748638711. The next prime is 43748638753. The reversal of 43748638717 is 71783684734.

It is a happy number.

It is not a de Polignac number, because 43748638717 - 2⁷ = 43748638589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43748638711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177628 + ... + 345034.

It is an arithmetic number, because the mean of its divisors is an integer number (3212559520).

Almost surely, 2^43748638717 is an apocalyptic number.

It is an amenable number.

43748638717 is a deficient number, since it is larger than the sum of its proper divisors (7652313603).

43748638717 is a wasteful number, since it uses less digits than its factorization.

43748638717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168460.

The product of its digits is 18966528, while the sum is 58.

The spelling of 43748638717 in words is "forty-three billion, seven hundred forty-eight million, six hundred thirty-eight thousand, seven hundred seventeen".