166010166161061 has 4 divisors (see below), whose sum is σ = 221346888214752. Its totient is φ = 110673444107372.

The previous prime is 166010166161053. The next prime is 166010166161071. The reversal of 166010166161061 is 160161661010661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166010166161061 - 2³ = 166010166161053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166010166161071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27668361026841 + ... + 27668361026846.

It is an arithmetic number, because the mean of its divisors is an integer number (55336722053688).

Almost surely, 2^{166010166161061} is an apocalyptic number.

It is an amenable number.

166010166161061 is a deficient number, since it is larger than the sum of its proper divisors (55336722053691).

166010166161061 is an equidigital number, since it uses as much as digits as its factorization.

166010166161061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55336722053690.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 166010166161061 in words is "one hundred sixty-six trillion, ten billion, one hundred sixty-six million, one hundred sixty-one thousand, sixty-one".