66137487168 has 56 divisors (see below), whose sum is σ = 180633583360. Its totient is φ = 21334671360.

The previous prime is 66137487151. The next prime is 66137487173. The reversal of 66137487168 is 86178473166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5549953 + ... + 5561856.

Almost surely, 2^66137487168 is an apocalyptic number.

It is an amenable number.

66137487168 is an abundant number, since it is smaller than the sum of its proper divisors (114496096192).

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

66137487168 is a wasteful number, since it uses less digits than its factorization.

66137487168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111855 (or 11111845 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The spelling of 66137487168 in words is "sixty-six billion, one hundred thirty-seven million, four hundred eighty-seven thousand, one hundred sixty-eight".