66317366016 has 216 divisors, whose sum is σ = 210942884880. Its totient is φ = 19869696000.

The previous prime is 66317365999. The next prime is 66317366023. The reversal of 66317366016 is 61066371366.

66317366016 is a `hidden beast` number, since 6 + 6 + 3 + 1 + 7 + 36 + 601 + 6 = 666.

It is a super-2 number, since 2×66317366016² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2240916 + ... + 2270316.

It is an arithmetic number, because the mean of its divisors is an integer number (976587430).

Almost surely, 2^66317366016 is an apocalyptic number.

66317366016 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66317366016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105471442440).

66317366016 is an abundant number, since it is smaller than the sum of its proper divisors (144625518864).

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

66317366016 is a wasteful number, since it uses less digits than its factorization.

66317366016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29523 (or 29506 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 66317366016 in words is "sixty-six billion, three hundred seventeen million, three hundred sixty-six thousand, sixteen".