66118941448008 has 256 divisors, whose sum is σ = 184440349900800. Its totient is φ = 19680105984000.

The previous prime is 66118941447983. The next prime is 66118941448073. The reversal of 66118941448008 is 80084414981166.

It is a super-2 number, since 2×66118941448008² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61912243 + ... + 62971133.

It is an arithmetic number, because the mean of its divisors is an integer number (720470116800).

Almost surely, 2^{66118941448008} 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 66118941448008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92220174950400).

66118941448008 is an abundant number, since it is smaller than the sum of its proper divisors (118321408452792).

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

66118941448008 is a wasteful number, since it uses less digits than its factorization.

66118941448008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059084 (or 1059080 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 66118941448008 in words is "sixty-six trillion, one hundred eighteen billion, nine hundred forty-one million, four hundred forty-eight thousand, eight".