47909307191 has 2 divisors, whose sum is σ = 47909307192. Its totient is φ = 47909307190.

The previous prime is 47909307169. The next prime is 47909307209. The reversal of 47909307191 is 19170390974.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47909307191 - 2¹⁸ = 47909045047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47909307161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23954653595 + 23954653596.

It is an arithmetic number, because the mean of its divisors is an integer number (23954653596).

Almost surely, 2^47909307191 is an apocalyptic number.

47909307191 is a deficient number, since it is larger than the sum of its proper divisors (1).

47909307191 is an equidigital number, since it uses as much as digits as its factorization.

47909307191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 50.

The spelling of 47909307191 in words is "forty-seven billion, nine hundred nine million, three hundred seven thousand, one hundred ninety-one".