66640301016 has 192 divisors, whose sum is σ = 184284374400. Its totient is φ = 20024193024.

The previous prime is 66640300943. The next prime is 66640301017. The reversal of 66640301016 is 61010304666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66640301017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54757240 + ... + 54758456.

It is an arithmetic number, because the mean of its divisors is an integer number (959814450).

Almost surely, 2^66640301016 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 66640301016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92142187200).

66640301016 is an abundant number, since it is smaller than the sum of its proper divisors (117644073384).

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

66640301016 is a wasteful number, since it uses less digits than its factorization.

66640301016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 66640301016 in words is "sixty-six billion, six hundred forty million, three hundred one thousand, sixteen".