66466820136 has 32 divisors (see below), whose sum is σ = 166173373440. Its totient is φ = 22154763648.

The previous prime is 66466820111. The next prime is 66466820141. The reversal of 66466820136 is 63102866466.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 1173460 + ... + 1228796.

It is an arithmetic number, because the mean of its divisors is an integer number (5192917920).

Almost surely, 2^66466820136 is an apocalyptic number.

It is an amenable number.

66466820136 is an abundant number, since it is smaller than the sum of its proper divisors (99706553304).

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

66466820136 is a wasteful number, since it uses less digits than its factorization.

66466820136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105393 (or 105389 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 66466820136 in words is "sixty-six billion, four hundred sixty-six million, eight hundred twenty thousand, one hundred thirty-six".