66110061653225 has 48 divisors (see below), whose sum is σ = 85149334093824. Its totient is φ = 50863157928000.

The previous prime is 66110061653191. The next prime is 66110061653239. The reversal of 66110061653225 is 52235616001166.

It is a de Polignac number, because none of the positive numbers 2^k-66110061653225 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98348114 + ... + 99018036.

It is an arithmetic number, because the mean of its divisors is an integer number (1773944460288).

Almost surely, 2^{66110061653225} is an apocalyptic number.

It is an amenable number.

66110061653225 is a deficient number, since it is larger than the sum of its proper divisors (19039272440599).

66110061653225 is a wasteful number, since it uses less digits than its factorization.

66110061653225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670758 (or 670753 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 66110061653225 in words is "sixty-six trillion, one hundred ten billion, sixty-one million, six hundred fifty-three thousand, two hundred twenty-five".