6124278821 has 2 divisors, whose sum is σ = 6124278822. Its totient is φ = 6124278820.

The previous prime is 6124278803. The next prime is 6124278829. The reversal of 6124278821 is 1288724216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5316013921 + 808264900 = 72911^2 + 28430^2 .

It is a cyclic number.

It is not a de Polignac number, because 6124278821 - 2²² = 6120084517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6124278829) 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, 3062139410 + 3062139411.

It is an arithmetic number, because the mean of its divisors is an integer number (3062139411).

Almost surely, 2^6124278821 is an apocalyptic number.

It is an amenable number.

6124278821 is a deficient number, since it is larger than the sum of its proper divisors (1).

6124278821 is an equidigital number, since it uses as much as digits as its factorization.

6124278821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 41.

The square root of 6124278821 is about 78257.7716332378. The cubic root of 6124278821 is about 1829.5810422764.

The spelling of 6124278821 in words is "six billion, one hundred twenty-four million, two hundred seventy-eight thousand, eight hundred twenty-one".