6661141808 has 20 divisors (see below), whose sum is σ = 12973538688. Its totient is φ = 3313131840.

The previous prime is 6661141777. The next prime is 6661141853. The reversal of 6661141808 is 8081411666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086791 + ... + 1092902.

Almost surely, 2^6661141808 is an apocalyptic number.

It is an amenable number.

6661141808 is a deficient number, since it is larger than the sum of its proper divisors (6312396880).

6661141808 is a wasteful number, since it uses less digits than its factorization.

6661141808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179892 (or 2179886 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 6661141808 is about 81615.8183687452. The cubic root of 6661141808 is about 1881.5520049687.

The spelling of 6661141808 in words is "six billion, six hundred sixty-one million, one hundred forty-one thousand, eight hundred eight".