66286310020 has 192 divisors, whose sum is σ = 165364416000. Its totient is φ = 21851504640.

The previous prime is 66286310011. The next prime is 66286310039. The reversal of 66286310020 is 2001368266.

It is a happy number.

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, 147630756 + ... + 147631204.

It is an arithmetic number, because the mean of its divisors is an integer number (861273000).

Almost surely, 2^66286310020 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 66286310020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82682208000).

66286310020 is an abundant number, since it is smaller than the sum of its proper divisors (99078105980).

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

66286310020 is a wasteful number, since it uses less digits than its factorization.

66286310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 66286310020 its reverse (2001368266), we get a palindrome (68287678286).

The spelling of 66286310020 in words is "sixty-six billion, two hundred eighty-six million, three hundred ten thousand, twenty".