47820705487 has 2 divisors, whose sum is σ = 47820705488. Its totient is φ = 47820705486.

The previous prime is 47820705479. The next prime is 47820705497. The reversal of 47820705487 is 78450702874.

47820705487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47820705487 - 2³ = 47820705479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47820705437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23910352743 + 23910352744.

It is an arithmetic number, because the mean of its divisors is an integer number (23910352744).

Almost surely, 2^47820705487 is an apocalyptic number.

47820705487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47820705487 is an equidigital number, since it uses as much as digits as its factorization.

47820705487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3512320, while the sum is 52.

The spelling of 47820705487 in words is "forty-seven billion, eight hundred twenty million, seven hundred five thousand, four hundred eighty-seven".