66336934938 has 16 divisors (see below), whose sum is σ = 133008065760. Its totient is φ = 22056612336.

The previous prime is 66336934933. The next prime is 66336934967. The reversal of 66336934938 is 83943963366.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66336934933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13922248 + ... + 13927011.

It is an arithmetic number, because the mean of its divisors is an integer number (8313004110).

Almost surely, 2^66336934938 is an apocalyptic number.

66336934938 is an abundant number, since it is smaller than the sum of its proper divisors (66671130822).

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

66336934938 is a wasteful number, since it uses less digits than its factorization.

66336934938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27849661.

The product of its digits is 45349632, while the sum is 60.

The spelling of 66336934938 in words is "sixty-six billion, three hundred thirty-six million, nine hundred thirty-four thousand, nine hundred thirty-eight".