47171007847 has 2 divisors, whose sum is σ = 47171007848. Its totient is φ = 47171007846.

The previous prime is 47171007827. The next prime is 47171007853. The reversal of 47171007847 is 74870017174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47171007847 - 2²³ = 47162619239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47171007797 and 47171007806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47171007817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23585503923 + 23585503924.

It is an arithmetic number, because the mean of its divisors is an integer number (23585503924).

Almost surely, 2^47171007847 is an apocalyptic number.

47171007847 is a deficient number, since it is larger than the sum of its proper divisors (1).

47171007847 is an equidigital number, since it uses as much as digits as its factorization.

47171007847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 307328, while the sum is 46.

The spelling of 47171007847 in words is "forty-seven billion, one hundred seventy-one million, seven thousand, eight hundred forty-seven".