66106661705010 has 48 divisors (see below), whose sum is σ = 171985897759104. Its totient is φ = 17617306985376.

The previous prime is 66106661705003. The next prime is 66106661705047. The reversal of 66106661705010 is 1050716660166.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231859572 + ... + 232144511.

It is an arithmetic number, because the mean of its divisors is an integer number (3583039536648).

Almost surely, 2^{66106661705010} is an apocalyptic number.

66106661705010 is an abundant number, since it is smaller than the sum of its proper divisors (105879236054094).

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

66106661705010 is a wasteful number, since it uses less digits than its factorization.

66106661705010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464005679 (or 464005676 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 66106661705010 in words is "sixty-six trillion, one hundred six billion, six hundred sixty-one million, seven hundred five thousand, ten".