66273107472 has 1200 divisors, whose sum is σ = 251437032000. Its totient is φ = 16669255680.

The previous prime is 66273107471. The next prime is 66273107503. The reversal of 66273107472 is 27470137266.

66273107472 is a `hidden beast` number, since 6 + 6 + 2 + 73 + 107 + 472 = 666.

It is not an unprimeable number, because it can be changed into a prime (66273107471) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1123272979 + ... + 1123273037.

It is an arithmetic number, because the mean of its divisors is an integer number (209530860).

Almost surely, 2^66273107472 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 66273107472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125718516000).

66273107472 is an abundant number, since it is smaller than the sum of its proper divisors (185163924528).

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

66273107472 is a wasteful number, since it uses less digits than its factorization.

66273107472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 66273107472 in words is "sixty-six billion, two hundred seventy-three million, one hundred seven thousand, four hundred seventy-two".