66335610056 has 8 divisors (see below), whose sum is σ = 124379268870. Its totient is φ = 33167805024.

The previous prime is 66335610031. The next prime is 66335610083. The reversal of 66335610056 is 65001653366.

66335610056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61370152900 + 4965457156 = 247730^2 + 70466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66335609995 and 66335610022.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145975621 + ... + 4145975636.

Almost surely, 2^66335610056 is an apocalyptic number.

It is an amenable number.

66335610056 is a deficient number, since it is larger than the sum of its proper divisors (58043658814).

66335610056 is a wasteful number, since it uses less digits than its factorization.

66335610056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291951263 (or 8291951259 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 66335610056 in words is "sixty-six billion, three hundred thirty-five million, six hundred ten thousand, fifty-six".