6641166452 has 6 divisors (see below), whose sum is σ = 11622041298. Its totient is φ = 3320583224.

The previous prime is 6641166443. The next prime is 6641166473. The reversal of 6641166452 is 2546611466.

It can be written as a sum of positive squares in only one way, i.e., 5751098896 + 890067556 = 75836^2 + 29834^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830145803 + ... + 830145810.

It is an arithmetic number, because the mean of its divisors is an integer number (1937006883).

Almost surely, 2^6641166452 is an apocalyptic number.

It is an amenable number.

6641166452 is a deficient number, since it is larger than the sum of its proper divisors (4980874846).

6641166452 is a wasteful number, since it uses less digits than its factorization.

6641166452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660291617 (or 1660291615 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 6641166452 is about 81493.3521951331. The cubic root of 6641166452 is about 1879.6693295743.

The spelling of 6641166452 in words is "six billion, six hundred forty-one million, one hundred sixty-six thousand, four hundred fifty-two".