47591447591 has 2 divisors, whose sum is σ = 47591447592. Its totient is φ = 47591447590.

The previous prime is 47591447581. The next prime is 47591447633. The reversal of 47591447591 is 19574419574.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47591447591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47591447531) 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, 23795723795 + 23795723796.

It is an arithmetic number, because the mean of its divisors is an integer number (23795723796).

Almost surely, 2^47591447591 is an apocalyptic number.

47591447591 is a deficient number, since it is larger than the sum of its proper divisors (1).

47591447591 is an equidigital number, since it uses as much as digits as its factorization.

47591447591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 56.

The spelling of 47591447591 in words is "forty-seven billion, five hundred ninety-one million, four hundred forty-seven thousand, five hundred ninety-one".