6643506413232 has 120 divisors (see below), whose sum is σ = 21200601449664. Its totient is φ = 1923911350272.

The previous prime is 6643506413197. The next prime is 6643506413237. The reversal of 6643506413232 is 2323146053466.

6643506413232 is a `hidden beast` number, since 6 + 6 + 4 + 3 + 506 + 4 + 132 + 3 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (6643506413237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104347048 + ... + 104410695.

Almost surely, 2^{6643506413232} is an apocalyptic number.

It is an amenable number.

6643506413232 is an abundant number, since it is smaller than the sum of its proper divisors (14557095036432).

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

6643506413232 is a wasteful number, since it uses less digits than its factorization.

6643506413232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208757787 (or 208757778 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 6643506413232 in words is "six trillion, six hundred forty-three billion, five hundred six million, four hundred thirteen thousand, two hundred thirty-two".