166056156005 has 16 divisors (see below), whose sum is σ = 206152041600. Its totient is φ = 128255749440.

The previous prime is 166056156001. The next prime is 166056156023. The reversal of 166056156005 is 500651650661.

It is not a de Polignac number, because 166056156005 - 2² = 166056156001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166056156001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3143360 + ... + 3195750.

It is an arithmetic number, because the mean of its divisors is an integer number (12884502600).

Almost surely, 2^166056156005 is an apocalyptic number.

It is an amenable number.

166056156005 is a deficient number, since it is larger than the sum of its proper divisors (40095885595).

166056156005 is a wasteful number, since it uses less digits than its factorization.

166056156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74284.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 166056156005 in words is "one hundred sixty-six billion, fifty-six million, one hundred fifty-six thousand, five".