66556350330 has 32 divisors (see below), whose sum is σ = 159795103104. Its totient is φ = 17741708736.

The previous prime is 66556350319. The next prime is 66556350347. The reversal of 66556350330 is 3305365566.

It is a super-2 number, since 2×66556350330² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334062 + ... + 494681.

It is an arithmetic number, because the mean of its divisors is an integer number (4993596972).

Almost surely, 2^66556350330 is an apocalyptic number.

66556350330 is an abundant number, since it is smaller than the sum of its proper divisors (93238752774).

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

66556350330 is a wasteful number, since it uses less digits than its factorization.

66556350330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831430.

The product of its (nonzero) digits is 729000, while the sum is 42.

The spelling of 66556350330 in words is "sixty-six billion, five hundred fifty-six million, three hundred fifty thousand, three hundred thirty".