6637143044 has 12 divisors (see below), whose sum is σ = 13274286144. Its totient is φ = 2844489864.

The previous prime is 6637143041. The next prime is 6637143083. The reversal of 6637143044 is 4403417366.

It is a happy number.

6637143044 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6637142989 and 6637143007.

It is not an unprimeable number, because it can be changed into a prime (6637143041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118520384 + ... + 118520439.

It is an arithmetic number, because the mean of its divisors is an integer number (1106190512).

Almost surely, 2^6637143044 is an apocalyptic number.

It is an amenable number.

6637143044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6637143044 is a wasteful number, since it uses less digits than its factorization.

6637143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237040834 (or 237040832 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 6637143044 is about 81468.6629569922. The cubic root of 6637143044 is about 1879.2896671352.

The spelling of 6637143044 in words is "six billion, six hundred thirty-seven million, one hundred forty-three thousand, forty-four".