6661632532 has 24 divisors (see below), whose sum is σ = 12150774272. Its totient is φ = 3192069600.

The previous prime is 6661632521. The next prime is 6661632533. The reversal of 6661632532 is 2352361666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661632533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248019 + ... + 273562.

Almost surely, 2^6661632532 is an apocalyptic number.

6661632532 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6661632532 is a deficient number, since it is larger than the sum of its proper divisors (5489141740).

6661632532 is a wasteful number, since it uses less digits than its factorization.

6661632532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521719 (or 521717 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 6661632532 is about 81618.8246178539. The cubic root of 6661632532 is about 1881.5982082614.

The spelling of 6661632532 in words is "six billion, six hundred sixty-one million, six hundred thirty-two thousand, five hundred thirty-two".