66737052320 has 192 divisors, whose sum is σ = 170970912000. Its totient is φ = 24524144640.

The previous prime is 66737052313. The next prime is 66737052377. The reversal of 66737052320 is 2325073766.

66737052320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 23910125 + ... + 23912915.

It is an arithmetic number, because the mean of its divisors is an integer number (890473500).

Almost surely, 2^66737052320 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 66737052320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85485456000).

66737052320 is an abundant number, since it is smaller than the sum of its proper divisors (104233859680).

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

66737052320 is a wasteful number, since it uses less digits than its factorization.

66737052320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3023 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 41.

The spelling of 66737052320 in words is "sixty-six billion, seven hundred thirty-seven million, fifty-two thousand, three hundred twenty".