49204321789891 has 2 divisors, whose sum is σ = 49204321789892. Its totient is φ = 49204321789890.

The previous prime is 49204321789853. The next prime is 49204321789897. The reversal of 49204321789891 is 19898712340294.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49204321789891 - 2⁹ = 49204321789379 is a prime.

It is not a weakly prime, because it can be changed into another prime (49204321789897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24602160894945 + 24602160894946.

It is an arithmetic number, because the mean of its divisors is an integer number (24602160894946).

Almost surely, 2^{49204321789891} is an apocalyptic number.

49204321789891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49204321789891 is an equidigital number, since it uses as much as digits as its factorization.

49204321789891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 67.

The spelling of 49204321789891 in words is "forty-nine trillion, two hundred four billion, three hundred twenty-one million, seven hundred eighty-nine thousand, eight hundred ninety-one".