43945473813 has 8 divisors (see below), whose sum is σ = 58917689376. Its totient is φ = 29135120400.

The previous prime is 43945473811. The next prime is 43945473839. The reversal of 43945473813 is 31837454934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43945473813 - 2¹ = 43945473811 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43945473811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40464903 + ... + 40465988.

It is an arithmetic number, because the mean of its divisors is an integer number (7364711172).

Almost surely, 2^43945473813 is an apocalyptic number.

It is an amenable number.

43945473813 is a deficient number, since it is larger than the sum of its proper divisors (14972215563).

43945473813 is a wasteful number, since it uses less digits than its factorization.

43945473813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80931075.

The product of its digits is 4354560, while the sum is 51.

The spelling of 43945473813 in words is "forty-three billion, nine hundred forty-five million, four hundred seventy-three thousand, eight hundred thirteen".