66304442730 has 64 divisors (see below), whose sum is σ = 163058894208. Its totient is φ = 17244963840.

The previous prime is 66304442693. The next prime is 66304442749. The reversal of 66304442730 is 3724440366.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 6424054 + ... + 6434366.

It is an arithmetic number, because the mean of its divisors is an integer number (2547795222).

Almost surely, 2^66304442730 is an apocalyptic number.

66304442730 is an abundant number, since it is smaller than the sum of its proper divisors (96754451478).

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

66304442730 is a wasteful number, since it uses less digits than its factorization.

66304442730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15591.

The product of its (nonzero) digits is 290304, while the sum is 39.

The spelling of 66304442730 in words is "sixty-six billion, three hundred four million, four hundred forty-two thousand, seven hundred thirty".