6640143230 has 32 divisors (see below), whose sum is σ = 13792356864. Its totient is φ = 2254514976.

The previous prime is 6640143179. The next prime is 6640143269. The reversal of 6640143230 is 323410466.

It is a super-2 number, since 2×6640143230² = 88183004229829665800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6640143193 and 6640143202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453272 + ... + 467691.

It is an arithmetic number, because the mean of its divisors is an integer number (431011152).

Almost surely, 2^6640143230 is an apocalyptic number.

6640143230 is an abundant number, since it is smaller than the sum of its proper divisors (7152213634).

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

6640143230 is a wasteful number, since it uses less digits than its factorization.

6640143230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921080.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 6640143230 is about 81487.0740056360. The cubic root of 6640143230 is about 1879.5727894153.

Adding to 6640143230 its reverse (323410466), we get a palindrome (6963553696).

The spelling of 6640143230 in words is "six billion, six hundred forty million, one hundred forty-three thousand, two hundred thirty".