6641533747 has 2 divisors, whose sum is σ = 6641533748. Its totient is φ = 6641533746.

The previous prime is 6641533709. The next prime is 6641533753. The reversal of 6641533747 is 7473351466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6641533747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6641533697 and 6641533706.

It is not a weakly prime, because it can be changed into another prime (6641533247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320766873 + 3320766874.

It is an arithmetic number, because the mean of its divisors is an integer number (3320766874).

Almost surely, 2^6641533747 is an apocalyptic number.

6641533747 is a deficient number, since it is larger than the sum of its proper divisors (1).

6641533747 is an equidigital number, since it uses as much as digits as its factorization.

6641533747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 46.

The square root of 6641533747 is about 81495.6056913500. The cubic root of 6641533747 is about 1879.7039811386.

The spelling of 6641533747 in words is "six billion, six hundred forty-one million, five hundred thirty-three thousand, seven hundred forty-seven".