47923347817 has 2 divisors, whose sum is σ = 47923347818. Its totient is φ = 47923347816.

The previous prime is 47923347751. The next prime is 47923347851. The reversal of 47923347817 is 71874332974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44141589801 + 3781758016 = 210099^2 + 61496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47923347817 is a prime.

It is not a weakly prime, because it can be changed into another prime (47923347877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23961673908 + 23961673909.

It is an arithmetic number, because the mean of its divisors is an integer number (23961673909).

Almost surely, 2^47923347817 is an apocalyptic number.

It is an amenable number.

47923347817 is a deficient number, since it is larger than the sum of its proper divisors (1).

47923347817 is an equidigital number, since it uses as much as digits as its factorization.

47923347817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The spelling of 47923347817 in words is "forty-seven billion, nine hundred twenty-three million, three hundred forty-seven thousand, eight hundred seventeen".