43191000487 has 2 divisors, whose sum is σ = 43191000488. Its totient is φ = 43191000486.

The previous prime is 43191000421. The next prime is 43191000509. The reversal of 43191000487 is 78400019134.

43191000487 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 a de Polignac number, because none of the positive numbers 2^k-43191000487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43191001487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21595500243 + 21595500244.

It is an arithmetic number, because the mean of its divisors is an integer number (21595500244).

Almost surely, 2^43191000487 is an apocalyptic number.

43191000487 is a deficient number, since it is larger than the sum of its proper divisors (1).

43191000487 is an equidigital number, since it uses as much as digits as its factorization.

43191000487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 43191000487 in words is "forty-three billion, one hundred ninety-one million, four hundred eighty-seven", and thus it is an aban number.