47899578497 has 2 divisors, whose sum is σ = 47899578498. Its totient is φ = 47899578496.

The previous prime is 47899578409. The next prime is 47899578499. The reversal of 47899578497 is 79487599874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24887902081 + 23011676416 = 157759^2 + 151696^2 .

It is a cyclic number.

It is not a de Polignac number, because 47899578497 - 2⁸ = 47899578241 is a prime.

Together with 47899578499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47899578499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23949789248 + 23949789249.

It is an arithmetic number, because the mean of its divisors is an integer number (23949789249).

Almost surely, 2^47899578497 is an apocalyptic number.

It is an amenable number.

47899578497 is a deficient number, since it is larger than the sum of its proper divisors (1).

47899578497 is an equidigital number, since it uses as much as digits as its factorization.

47899578497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280240640, while the sum is 77.

The spelling of 47899578497 in words is "forty-seven billion, eight hundred ninety-nine million, five hundred seventy-eight thousand, four hundred ninety-seven".