47905842779 has 2 divisors, whose sum is σ = 47905842780. Its totient is φ = 47905842778.

The previous prime is 47905842757. The next prime is 47905842857. The reversal of 47905842779 is 97724850974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47905842779 - 2²⁴ = 47889065563 is a prime.

It is not a weakly prime, because it can be changed into another prime (47905848779) 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, 23952921389 + 23952921390.

It is an arithmetic number, because the mean of its divisors is an integer number (23952921390).

Almost surely, 2^47905842779 is an apocalyptic number.

47905842779 is a deficient number, since it is larger than the sum of its proper divisors (1).

47905842779 is an equidigital number, since it uses as much as digits as its factorization.

47905842779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 47905842779 in words is "forty-seven billion, nine hundred five million, eight hundred forty-two thousand, seven hundred seventy-nine".