66965708096 has 42 divisors (see below), whose sum is σ = 154580607018. Its totient is φ = 28699587840.

The previous prime is 66965708087. The next prime is 66965708099. The reversal of 66965708096 is 69080756966.

It can be written as a sum of positive squares in only one way, i.e., 66646585600 + 319122496 = 258160^2 + 17864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66965708099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10673795 + ... + 10680066.

Almost surely, 2^66965708096 is an apocalyptic number.

It is an amenable number.

66965708096 is an abundant number, since it is smaller than the sum of its proper divisors (87614898922).

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

66965708096 is a wasteful number, since it uses less digits than its factorization.

66965708096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21353887 (or 21353870 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 66965708096 in words is "sixty-six billion, nine hundred sixty-five million, seven hundred eight thousand, ninety-six".