66610466056 has 8 divisors (see below), whose sum is σ = 124894623870. Its totient is φ = 33305233024.

The previous prime is 66610466047. The next prime is 66610466107. The reversal of 66610466056 is 65066401666.

It can be written as a sum of positive squares in only one way, i.e., 66610448100 + 17956 = 258090^2 + 134^2 .

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

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66610465997 and 66610466015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4163154121 + ... + 4163154136.

Almost surely, 2^66610466056 is an apocalyptic number.

It is an amenable number.

66610466056 is a deficient number, since it is larger than the sum of its proper divisors (58284157814).

66610466056 is a wasteful number, since it uses less digits than its factorization.

66610466056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326308263 (or 8326308259 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 66610466056 in words is "sixty-six billion, six hundred ten million, four hundred sixty-six thousand, fifty-six".