43668881567 has 2 divisors, whose sum is σ = 43668881568. Its totient is φ = 43668881566.

The previous prime is 43668881521. The next prime is 43668881609. The reversal of 43668881567 is 76518886634.

43668881567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43668881567 - 2²⁰ = 43667832991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43668881467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21834440783 + 21834440784.

It is an arithmetic number, because the mean of its divisors is an integer number (21834440784).

Almost surely, 2^43668881567 is an apocalyptic number.

43668881567 is a deficient number, since it is larger than the sum of its proper divisors (1).

43668881567 is an equidigital number, since it uses as much as digits as its factorization.

43668881567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 62.

The spelling of 43668881567 in words is "forty-three billion, six hundred sixty-eight million, eight hundred eighty-one thousand, five hundred sixty-seven".