66740243330 has 64 divisors (see below), whose sum is σ = 125984636928. Its totient is φ = 25407645120.

The previous prime is 66740243327. The next prime is 66740243341. The reversal of 66740243330 is 3334204766.

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, 56993645 + ... + 56994815.

It is an arithmetic number, because the mean of its divisors is an integer number (1968509952).

Almost surely, 2^66740243330 is an apocalyptic number.

66740243330 is a deficient number, since it is larger than the sum of its proper divisors (59244393598).

66740243330 is a wasteful number, since it uses less digits than its factorization.

66740243330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 217728, while the sum is 38.

The spelling of 66740243330 in words is "sixty-six billion, seven hundred forty million, two hundred forty-three thousand, three hundred thirty".