66967886336 has 160 divisors (see below), whose sum is σ = 151410809088. Its totient is φ = 29358489600.

The previous prime is 66967886333. The next prime is 66967886341. The reversal of 66967886336 is 63368876966.

It is a super-2 number, since 2×66967886336² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66967886333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23114840 + ... + 23117736.

Almost surely, 2^66967886336 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 66967886336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75705404544).

66967886336 is an abundant number, since it is smaller than the sum of its proper divisors (84442922752).

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

66967886336 is a wasteful number, since it uses less digits than its factorization.

66967886336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102 (or 3086 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 68.

The spelling of 66967886336 in words is "sixty-six billion, nine hundred sixty-seven million, eight hundred eighty-six thousand, three hundred thirty-six".