43681344377 has 16 divisors (see below), whose sum is σ = 48670450560. Its totient is φ = 38865590400.

The previous prime is 43681344361. The next prime is 43681344379. The reversal of 43681344377 is 77344318634.

It is a cyclic number.

It is not a de Polignac number, because 43681344377 - 2⁴ = 43681344361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43681344379) 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, 146852 + ... + 330042.

It is an arithmetic number, because the mean of its divisors is an integer number (3041903160).

Almost surely, 2^43681344377 is an apocalyptic number.

It is an amenable number.

43681344377 is a deficient number, since it is larger than the sum of its proper divisors (4989106183).

43681344377 is a wasteful number, since it uses less digits than its factorization.

43681344377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183664.

The product of its digits is 4064256, while the sum is 50.

The spelling of 43681344377 in words is "forty-three billion, six hundred eighty-one million, three hundred forty-four thousand, three hundred seventy-seven".