166660560101 has 16 divisors (see below), whose sum is σ = 191938032000. Its totient is φ = 141752200128.

The previous prime is 166660560091. The next prime is 166660560109. The reversal of 166660560101 is 101065066661.

It is a happy number.

It is not a de Polignac number, because 166660560101 - 2¹⁴ = 166660543717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166660560109) 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, 977690 + ... + 1135428.

It is an arithmetic number, because the mean of its divisors is an integer number (11996127000).

Almost surely, 2^166660560101 is an apocalyptic number.

It is an amenable number.

166660560101 is a deficient number, since it is larger than the sum of its proper divisors (25277471899).

166660560101 is a wasteful number, since it uses less digits than its factorization.

166660560101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158908.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 166660560101 in words is "one hundred sixty-six billion, six hundred sixty million, five hundred sixty thousand, one hundred one".