6144064721 has 2 divisors, whose sum is σ = 6144064722. Its totient is φ = 6144064720.

The previous prime is 6144064691. The next prime is 6144064723. The reversal of 6144064721 is 1274604416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6130107025 + 13957696 = 78295^2 + 3736^2 .

It is a cyclic number.

It is not a de Polignac number, because 6144064721 - 2¹⁰ = 6144063697 is a prime.

It is a Sophie Germain prime.

Together with 6144064723, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6144064723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3072032360 + 3072032361.

It is an arithmetic number, because the mean of its divisors is an integer number (3072032361).

Almost surely, 2^6144064721 is an apocalyptic number.

It is an amenable number.

6144064721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6144064721 is an equidigital number, since it uses as much as digits as its factorization.

6144064721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 6144064721 is about 78384.0846154371. The cubic root of 6144064721 is about 1831.5492192303.

The spelling of 6144064721 in words is "six billion, one hundred forty-four million, sixty-four thousand, seven hundred twenty-one".