66061115056 has 20 divisors (see below), whose sum is σ = 128557265112. Its totient is φ = 32885046656.

The previous prime is 66061115053. The next prime is 66061115059. The reversal of 66061115056 is 65051116066.

66061115056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66061115053) and next prime (66061115059).

It is not an unprimeable number, because it can be changed into a prime (66061115053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9090685 + ... + 9097948.

Almost surely, 2^66061115056 is an apocalyptic number.

It is an amenable number.

66061115056 is a deficient number, since it is larger than the sum of its proper divisors (62496150056).

66061115056 is a wasteful number, since it uses less digits than its factorization.

66061115056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18188868 (or 18188862 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 66061115056 in words is "sixty-six billion, sixty-one million, one hundred fifteen thousand, fifty-six".