6127878817 has 2 divisors, whose sum is σ = 6127878818. Its totient is φ = 6127878816.

The previous prime is 6127878793. The next prime is 6127878821. The reversal of 6127878817 is 7188787216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5035179681 + 1092699136 = 70959^2 + 33056^2 .

It is a cyclic number.

It is not a de Polignac number, because 6127878817 - 2¹⁹ = 6127354529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6127878857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3063939408 + 3063939409.

It is an arithmetic number, because the mean of its divisors is an integer number (3063939409).

Almost surely, 2^6127878817 is an apocalyptic number.

It is an amenable number.

6127878817 is a deficient number, since it is larger than the sum of its proper divisors (1).

6127878817 is an equidigital number, since it uses as much as digits as its factorization.

6127878817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2107392, while the sum is 55.

The square root of 6127878817 is about 78280.7691390421. The cubic root of 6127878817 is about 1829.9394623986.

The spelling of 6127878817 in words is "six billion, one hundred twenty-seven million, eight hundred seventy-eight thousand, eight hundred seventeen".