66405586336 has 24 divisors (see below), whose sum is σ = 130951416960. Its totient is φ = 33148083648.

The previous prime is 66405586301. The next prime is 66405586343. The reversal of 66405586336 is 63368550466.

66405586336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689946 + ... + 1728793.

It is an arithmetic number, because the mean of its divisors is an integer number (5456309040).

Almost surely, 2^66405586336 is an apocalyptic number.

It is an amenable number.

66405586336 is a deficient number, since it is larger than the sum of its proper divisors (64545830624).

66405586336 is a wasteful number, since it uses less digits than its factorization.

66405586336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419356 (or 3419348 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 66405586336 in words is "sixty-six billion, four hundred five million, five hundred eighty-six thousand, three hundred thirty-six".