66330530140 has 96 divisors (see below), whose sum is σ = 167383036800. Its totient is φ = 21597649920.

The previous prime is 66330530129. The next prime is 66330530173. The reversal of 66330530140 is 4103503366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113746 + ... + 381574.

It is an arithmetic number, because the mean of its divisors is an integer number (1743573300).

Almost surely, 2^66330530140 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 66330530140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83691518400).

66330530140 is an abundant number, since it is smaller than the sum of its proper divisors (101052506660).

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

66330530140 is a wasteful number, since it uses less digits than its factorization.

66330530140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267935 (or 267933 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 66330530140 in words is "sixty-six billion, three hundred thirty million, five hundred thirty thousand, one hundred forty".