66746789316 has 135 divisors (see below), whose sum is σ = 180689806143. Its totient is φ = 21484718640.

The previous prime is 66746789297. The next prime is 66746789327. The reversal of 66746789316 is 61398764766.

The square root of 66746789316 is 258354.

It is a perfect power (a square), and thus also a powerful number.

66746789316 is a `hidden beast` number, since 6 + 67 + 467 + 89 + 31 + 6 = 666.

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 44 ways as a sum of consecutive naturals, for example, 144161301 + ... + 144161763.

Almost surely, 2^66746789316 is an apocalyptic number.

66746789316 is the 258354-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66746789316

66746789316 is an abundant number, since it is smaller than the sum of its proper divisors (113943016827).

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

66746789316 is an equidigital number, since it uses as much as digits as its factorization.

66746789316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 499 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 66746789316 in words is "sixty-six billion, seven hundred forty-six million, seven hundred eighty-nine thousand, three hundred sixteen".