6143328172721 has 2 divisors, whose sum is σ = 6143328172722. Its totient is φ = 6143328172720.

The previous prime is 6143328172711. The next prime is 6143328172739. The reversal of 6143328172721 is 1272718233416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5793143541025 + 350184631696 = 2406895^2 + 591764^2 .

It is a cyclic number.

It is not a de Polignac number, because 6143328172721 - 2³⁴ = 6126148303537 is a prime.

It is not a weakly prime, because it can be changed into another prime (6143328172711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071664086360 + 3071664086361.

It is an arithmetic number, because the mean of its divisors is an integer number (3071664086361).

Almost surely, 2^{6143328172721} is an apocalyptic number.

It is an amenable number.

6143328172721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6143328172721 is an equidigital number, since it uses as much as digits as its factorization.

6143328172721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The spelling of 6143328172721 in words is "six trillion, one hundred forty-three billion, three hundred twenty-eight million, one hundred seventy-two thousand, seven hundred twenty-one".