6646375132 has 12 divisors (see below), whose sum is σ = 11634673680. Its totient is φ = 3322182656.

The previous prime is 6646375117. The next prime is 6646375163. The reversal of 6646375132 is 2315736466.

It is a congruent number.

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, 236248 + ... + 262879.

It is an arithmetic number, because the mean of its divisors is an integer number (969556140).

Almost surely, 2^6646375132 is an apocalyptic number.

It is an amenable number.

6646375132 is a deficient number, since it is larger than the sum of its proper divisors (4988298548).

6646375132 is a wasteful number, since it uses less digits than its factorization.

6646375132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502460 (or 502458 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 6646375132 is about 81525.3036302227. The cubic root of 6646375132 is about 1880.1606106183.

The spelling of 6646375132 in words is "six billion, six hundred forty-six million, three hundred seventy-five thousand, one hundred thirty-two".