6641433377 has 16 divisors (see below), whose sum is σ = 6962030592. Its totient is φ = 6330078720.

The previous prime is 6641433373. The next prime is 6641433391. The reversal of 6641433377 is 7733341466.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6641433377 - 2² = 6641433373 is a prime.

It is a super-2 number, since 2×6641433377² = 88217274602259248258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6641433373) 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 15 ways as a sum of consecutive naturals, for example, 323153 + ... + 343089.

It is an arithmetic number, because the mean of its divisors is an integer number (435126912).

Almost surely, 2^6641433377 is an apocalyptic number.

It is an amenable number.

6641433377 is a deficient number, since it is larger than the sum of its proper divisors (320597215).

6641433377 is a wasteful number, since it uses less digits than its factorization.

6641433377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20168.

The product of its digits is 762048, while the sum is 44.

The square root of 6641433377 is about 81494.9898889496. The cubic root of 6641433377 is about 1879.6945120990.

The spelling of 6641433377 in words is "six billion, six hundred forty-one million, four hundred thirty-three thousand, three hundred seventy-seven".