66606115511056 has 80 divisors (see below), whose sum is σ = 149477567287680. Its totient is φ = 28415222282240.

The previous prime is 66606115511051. The next prime is 66606115511063. The reversal of 66606115511056 is 65011551160666.

It is not an unprimeable number, because it can be changed into a prime (66606115511051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29930611 + ... + 32078866.

It is an arithmetic number, because the mean of its divisors is an integer number (1868469591096).

Almost surely, 2^{66606115511056} is an apocalyptic number.

It is an amenable number.

66606115511056 is an abundant number, since it is smaller than the sum of its proper divisors (82871451776624).

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

66606115511056 is a wasteful number, since it uses less digits than its factorization.

66606115511056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62009872 (or 62009866 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 66606115511056 in words is "sixty-six trillion, six hundred six billion, one hundred fifteen million, five hundred eleven thousand, fifty-six".