47478675509 has 2 divisors, whose sum is σ = 47478675510. Its totient is φ = 47478675508.

The previous prime is 47478675421. The next prime is 47478675527. The reversal of 47478675509 is 90557687474.

47478675509 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 can be written as a sum of positive squares in only one way, i.e., 33618322609 + 13860352900 = 183353^2 + 117730^2 .

It is a cyclic number.

It is not a de Polignac number, because 47478675509 - 2¹⁶ = 47478609973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47478675529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23739337754 + 23739337755.

It is an arithmetic number, because the mean of its divisors is an integer number (23739337755).

Almost surely, 2^47478675509 is an apocalyptic number.

It is an amenable number.

47478675509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47478675509 is an equidigital number, since it uses as much as digits as its factorization.

47478675509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 47478675509 in words is "forty-seven billion, four hundred seventy-eight million, six hundred seventy-five thousand, five hundred nine".