66346304406 has 64 divisors (see below), whose sum is σ = 138370498560. Its totient is φ = 21191924000.

The previous prime is 66346304393. The next prime is 66346304449. The reversal of 66346304406 is 60440364366.

66346304406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4168195 + ... + 4184081.

It is an arithmetic number, because the mean of its divisors is an integer number (2162039040).

Almost surely, 2^66346304406 is an apocalyptic number.

66346304406 is an abundant number, since it is smaller than the sum of its proper divisors (72024194154).

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

66346304406 is a wasteful number, since it uses less digits than its factorization.

66346304406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16249.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 66346304406 in words is "sixty-six billion, three hundred forty-six million, three hundred four thousand, four hundred six".