6641565132 has 24 divisors (see below), whose sum is σ = 15570436672. Its totient is φ = 2203362000.

The previous prime is 6641565107. The next prime is 6641565143. The reversal of 6641565132 is 2315651466.

It is a super-2 number, since 2×6641565132² = 88220774805196354848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308994 + ... + 1314057.

Almost surely, 2^6641565132 is an apocalyptic number.

It is an amenable number.

6641565132 is an abundant number, since it is smaller than the sum of its proper divisors (8928871540).

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

6641565132 is a wasteful number, since it uses less digits than its factorization.

6641565132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623269 (or 2623267 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 6641565132 is about 81495.7982475170. The cubic root of 6641565132 is about 1879.7069420218.

The spelling of 6641565132 in words is "six billion, six hundred forty-one million, five hundred sixty-five thousand, one hundred thirty-two".