6644141741 has 2 divisors, whose sum is σ = 6644141742. Its totient is φ = 6644141740.

The previous prime is 6644141723. The next prime is 6644141747. The reversal of 6644141741 is 1471414466.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5190626116 + 1453515625 = 72046^2 + 38125^2 .

It is a cyclic number.

It is not a de Polignac number, because 6644141741 - 2⁶ = 6644141677 is a prime.

It is a super-2 number, since 2×6644141741² = 88289238948997022162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6644141695 and 6644141704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6644141747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322070870 + 3322070871.

It is an arithmetic number, because the mean of its divisors is an integer number (3322070871).

Almost surely, 2^6644141741 is an apocalyptic number.

It is an amenable number.

6644141741 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644141741 is an equidigital number, since it uses as much as digits as its factorization.

6644141741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 6644141741 is about 81511.6049467804. The cubic root of 6644141741 is about 1879.9499893329.

The spelling of 6644141741 in words is "six billion, six hundred forty-four million, one hundred forty-one thousand, seven hundred forty-one".