166010106506566 has 16 divisors (see below), whose sum is σ = 286063307145504. Its totient is φ = 70778550219264.

The previous prime is 166010106506549. The next prime is 166010106506579. The reversal of 166010106506566 is 665605601010661.

It is a super-2 number, since 2×166010106506566² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30719854165 + ... + 30719859568.

It is an arithmetic number, because the mean of its divisors is an integer number (17878956696594).

Almost surely, 2^{166010106506566} is an apocalyptic number.

166010106506566 is a deficient number, since it is larger than the sum of its proper divisors (120053200638938).

166010106506566 is a wasteful number, since it uses less digits than its factorization.

166010106506566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61439713935.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 166010106506566 in words is "one hundred sixty-six trillion, ten billion, one hundred six million, five hundred six thousand, five hundred sixty-six".