4855721791 has 2 divisors, whose sum is σ = 4855721792. Its totient is φ = 4855721790.

The previous prime is 4855721777. The next prime is 4855721821. The reversal of 4855721791 is 1971275584.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4855721791 - 2⁹ = 4855721279 is a prime.

It is a super-2 number, since 2×4855721791² = 47156068223184495362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4855721701) 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, 2427860895 + 2427860896.

It is an arithmetic number, because the mean of its divisors is an integer number (2427860896).

Almost surely, 2^4855721791 is an apocalyptic number.

4855721791 is a deficient number, since it is larger than the sum of its proper divisors (1).

4855721791 is an equidigital number, since it uses as much as digits as its factorization.

4855721791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 49.

The square root of 4855721791 is about 69683.0093423067. The cubic root of 4855721791 is about 1693.3676753537.

The spelling of 4855721791 in words is "four billion, eight hundred fifty-five million, seven hundred twenty-one thousand, seven hundred ninety-one".