47045545691 has 2 divisors, whose sum is σ = 47045545692. Its totient is φ = 47045545690.

The previous prime is 47045545637. The next prime is 47045545721. The reversal of 47045545691 is 19654554074.

47045545691 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 47045545691 - 2³⁴ = 29865676507 is a prime.

It is not a weakly prime, because it can be changed into another prime (47045545601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23522772845 + 23522772846.

It is an arithmetic number, because the mean of its divisors is an integer number (23522772846).

Almost surely, 2^47045545691 is an apocalyptic number.

47045545691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47045545691 is an equidigital number, since it uses as much as digits as its factorization.

47045545691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 47045545691 in words is "forty-seven billion, forty-five million, five hundred forty-five thousand, six hundred ninety-one".