6643934593746 has 32 divisors (see below), whose sum is σ = 13807348002816. Its totient is φ = 2129011290000.

The previous prime is 6643934593717. The next prime is 6643934593757. The reversal of 6643934593746 is 6473954393466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118250320 + ... + 118306491.

It is an arithmetic number, because the mean of its divisors is an integer number (431479625088).

Almost surely, 2^{6643934593746} is an apocalyptic number.

6643934593746 is an abundant number, since it is smaller than the sum of its proper divisors (7163413409070).

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

6643934593746 is a wasteful number, since it uses less digits than its factorization.

6643934593746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236556998.

The product of its digits is 1058158080, while the sum is 69.

The spelling of 6643934593746 in words is "six trillion, six hundred forty-three billion, nine hundred thirty-four million, five hundred ninety-three thousand, seven hundred forty-six".