43680661431617 has 96 divisors (see below), whose sum is σ = 55646126807040. Its totient is φ = 34084718680320.

The previous prime is 43680661431529. The next prime is 43680661431637. The reversal of 43680661431617 is 71613416608634.

It is a happy number.

43680661431617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43680661431617 - 2⁴⁴ = 26088475387201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43680661431637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1666996838 + ... + 1667023040.

It is an arithmetic number, because the mean of its divisors is an integer number (579647154240).

Almost surely, 2^{43680661431617} is an apocalyptic number.

It is an amenable number.

43680661431617 is a deficient number, since it is larger than the sum of its proper divisors (11965465375423).

43680661431617 is a wasteful number, since it uses less digits than its factorization.

43680661431617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27163 (or 27156 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 43680661431617 in words is "forty-three trillion, six hundred eighty billion, six hundred sixty-one million, four hundred thirty-one thousand, six hundred seventeen".