6368127121 has 4 divisors (see below), whose sum is σ = 6742722852. Its totient is φ = 5993531392.

The previous prime is 6368127113. The next prime is 6368127127. The reversal of 6368127121 is 1217218636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1937760400 + 4430366721 = 44020^2 + 66561^2 .

It is a cyclic number.

It is not a de Polignac number, because 6368127121 - 2³ = 6368127113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6368127127) 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 in 3 ways as a sum of consecutive naturals, for example, 187297840 + ... + 187297873.

It is an arithmetic number, because the mean of its divisors is an integer number (1685680713).

Almost surely, 2^6368127121 is an apocalyptic number.

It is an amenable number.

6368127121 is a deficient number, since it is larger than the sum of its proper divisors (374595731).

6368127121 is a wasteful number, since it uses less digits than its factorization.

6368127121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374595730.

The product of its digits is 24192, while the sum is 37.

The square root of 6368127121 is about 79800.5458690603. The cubic root of 6368127121 is about 1853.5483028304.

The spelling of 6368127121 in words is "six billion, three hundred sixty-eight million, one hundred twenty-seven thousand, one hundred twenty-one".