6666236144 has 20 divisors (see below), whose sum is σ = 13079326560. Its totient is φ = 3290926080.

The previous prime is 6666236141. The next prime is 6666236147. The reversal of 6666236144 is 4416326666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6666236141) and next prime (6666236147).

It is a junction number, because it is equal to n+sod(n) for n = 6666236095 and 6666236104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666236141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635697 + ... + 2638224.

It is an arithmetic number, because the mean of its divisors is an integer number (653966328).

Almost surely, 2^6666236144 is an apocalyptic number.

It is an amenable number.

6666236144 is a deficient number, since it is larger than the sum of its proper divisors (6413090416).

6666236144 is a wasteful number, since it uses less digits than its factorization.

6666236144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274008 (or 5274002 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The square root of 6666236144 is about 81647.0216480675. The cubic root of 6666236144 is about 1882.0315431559.

The spelling of 6666236144 in words is "six billion, six hundred sixty-six million, two hundred thirty-six thousand, one hundred forty-four".