66017526112608 has 96 divisors (see below), whose sum is σ = 198054201993984. Its totient is φ = 18861995684352.

The previous prime is 66017526112607. The next prime is 66017526112631. The reversal of 66017526112608 is 80621162571066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66017526112607) 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, 100382866 + ... + 101038382.

It is an arithmetic number, because the mean of its divisors is an integer number (2063064604104).

Almost surely, 2^{66017526112608} is an apocalyptic number.

It is an amenable number.

66017526112608 is an abundant number, since it is smaller than the sum of its proper divisors (132036675881376).

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

66017526112608 is a wasteful number, since it uses less digits than its factorization.

66017526112608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805404 (or 805396 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 66017526112608 in words is "sixty-six trillion, seventeen billion, five hundred twenty-six million, one hundred twelve thousand, six hundred eight".