166123061 has 16 divisors (see below), whose sum is σ = 192709440. Its totient is φ = 141886080.

The previous prime is 166123037. The next prime is 166123063. The reversal of 166123061 is 160321661.

It is a cyclic number.

It is not a de Polignac number, because 166123061 - 2¹⁸ = 165860917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166123061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166123063) 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, 2801 + ... + 18441.

It is an arithmetic number, because the mean of its divisors is an integer number (12044340).

Almost surely, 2^166123061 is an apocalyptic number.

It is an amenable number.

166123061 is a deficient number, since it is larger than the sum of its proper divisors (26586379).

166123061 is a wasteful number, since it uses less digits than its factorization.

166123061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15716.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 166123061 is about 12888.8735349525. The cubic root of 166123061 is about 549.7222410180.

The spelling of 166123061 in words is "one hundred sixty-six million, one hundred twenty-three thousand, sixty-one".