6691536432 has 540 divisors, whose sum is σ = 23945337936. Its totient is φ = 1737469440.

The previous prime is 6691536421. The next prime is 6691536463. The reversal of 6691536432 is 2346351966.

6691536432 is a `hidden beast` number, since 6 + 69 + 153 + 6 + 432 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 94246957 + ... + 94247027.

Almost surely, 2^6691536432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691536432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11972668968).

6691536432 is an abundant number, since it is smaller than the sum of its proper divisors (17253801504).

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

6691536432 is a wasteful number, since it uses less digits than its factorization.

6691536432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 139 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 6691536432 is about 81801.8119114730. The cubic root of 6691536432 is about 1884.4094881207.

The spelling of 6691536432 in words is "six billion, six hundred ninety-one million, five hundred thirty-six thousand, four hundred thirty-two".