47205228991 has 2 divisors, whose sum is σ = 47205228992. Its totient is φ = 47205228990.

The previous prime is 47205228971. The next prime is 47205229033. The reversal of 47205228991 is 19982250274.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47205228991 - 2²¹ = 47203131839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47205228901) 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, 23602614495 + 23602614496.

It is an arithmetic number, because the mean of its divisors is an integer number (23602614496).

Almost surely, 2^47205228991 is an apocalyptic number.

47205228991 is a deficient number, since it is larger than the sum of its proper divisors (1).

47205228991 is an equidigital number, since it uses as much as digits as its factorization.

47205228991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 47205228991 in words is "forty-seven billion, two hundred five million, two hundred twenty-eight thousand, nine hundred ninety-one".