166056906175 has 24 divisors (see below), whose sum is σ = 206740426496. Its totient is φ = 132311219040.

The previous prime is 166056906137. The next prime is 166056906179. The reversal of 166056906175 is 571609650661.

It is a happy number.

It is not a de Polignac number, because 166056906175 - 2¹⁷ = 166056775103 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 (166056906179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6318412 + ... + 6344638.

Almost surely, 2^166056906175 is an apocalyptic number.

166056906175 is a deficient number, since it is larger than the sum of its proper divisors (40683520321).

166056906175 is a wasteful number, since it uses less digits than its factorization.

166056906175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27247 (or 27242 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 166056906175 in words is "one hundred sixty-six billion, fifty-six million, nine hundred six thousand, one hundred seventy-five".