43680661431618 has 8 divisors (see below), whose sum is σ = 87361322863248. Its totient is φ = 14560220477204.

The previous prime is 43680661431529. The next prime is 43680661431637. The reversal of 43680661431618 is 81613416608634.

43680661431618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

43680661431618 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3640055119296 + ... + 3640055119307.

It is an arithmetic number, because the mean of its divisors is an integer number (10920165357906).

Almost surely, 2^{43680661431618} is an apocalyptic number.

43680661431618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43680661431618 is a wasteful number, since it uses less digits than its factorization.

43680661431618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280110238608.

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 43680661431618 in words is "forty-three trillion, six hundred eighty billion, six hundred sixty-one million, four hundred thirty-one thousand, six hundred eighteen".