6221773457 has 2 divisors, whose sum is σ = 6221773458. Its totient is φ = 6221773456.

The previous prime is 6221773451. The next prime is 6221773471. The reversal of 6221773457 is 7543771226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5820011521 + 401761936 = 76289^2 + 20044^2 .

It is a cyclic number.

It is not a de Polignac number, because 6221773457 - 2²² = 6217579153 is a prime.

It is not a weakly prime, because it can be changed into another prime (6221773451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110886728 + 3110886729.

It is an arithmetic number, because the mean of its divisors is an integer number (3110886729).

Almost surely, 2^6221773457 is an apocalyptic number.

It is an amenable number.

6221773457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221773457 is an equidigital number, since it uses as much as digits as its factorization.

6221773457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 44.

The square root of 6221773457 is about 78878.2191545930. The cubic root of 6221773457 is about 1839.2385650045.

The spelling of 6221773457 in words is "six billion, two hundred twenty-one million, seven hundred seventy-three thousand, four hundred fifty-seven".