66740727200 has 144 divisors (see below), whose sum is σ = 187630115904. Its totient is φ = 22707609600.

The previous prime is 66740727197. The next prime is 66740727203. The reversal of 66740727200 is 272704766.

It is an interprime number because it is at equal distance from previous prime (66740727197) and next prime (66740727203).

It is not an unprimeable number, because it can be changed into a prime (66740727203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688112 + ... + 779088.

It is an arithmetic number, because the mean of its divisors is an integer number (1302986916).

Almost surely, 2^66740727200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66740727200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93815057952).

66740727200 is an abundant number, since it is smaller than the sum of its proper divisors (120889388704).

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

66740727200 is a wasteful number, since it uses less digits than its factorization.

66740727200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91135 (or 91122 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 66740727200 in words is "sixty-six billion, seven hundred forty million, seven hundred twenty-seven thousand, two hundred".