66939832960 has 1152 divisors, whose sum is σ = 233834428800. Its totient is φ = 18109808640.

The previous prime is 66939832951. The next prime is 66939832969. The reversal of 66939832960 is 6923893966.

66939832960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66939832951) and next prime (66939832969).

It is not an unprimeable number, because it can be changed into a prime (66939832969) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1134573411 + ... + 1134573469.

It is an arithmetic number, because the mean of its divisors is an integer number (202981275).

Almost surely, 2^66939832960 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 66939832960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116917214400).

66939832960 is an abundant number, since it is smaller than the sum of its proper divisors (166894595840).

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

66939832960 is a wasteful number, since it uses less digits than its factorization.

66939832960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 61.

The spelling of 66939832960 in words is "sixty-six billion, nine hundred thirty-nine million, eight hundred thirty-two thousand, nine hundred sixty".