166863158485 has 16 divisors (see below), whose sum is σ = 202131578880. Its totient is φ = 132227380800.

The previous prime is 166863158477. The next prime is 166863158507. The reversal of 166863158485 is 584851368661.

It is not a de Polignac number, because 166863158485 - 2³ = 166863158477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1910010 + ... + 1995460.

It is an arithmetic number, because the mean of its divisors is an integer number (12633223680).

Almost surely, 2^166863158485 is an apocalyptic number.

It is an amenable number.

166863158485 is a deficient number, since it is larger than the sum of its proper divisors (35268420395).

166863158485 is a wasteful number, since it uses less digits than its factorization.

166863158485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89148.

The product of its digits is 33177600, while the sum is 61.

The spelling of 166863158485 in words is "one hundred sixty-six billion, eight hundred sixty-three million, one hundred fifty-eight thousand, four hundred eighty-five".