165803028810 has 32 divisors (see below), whose sum is σ = 399206800512. Its totient is φ = 44071970880.

The previous prime is 165803028803. The next prime is 165803028823. The reversal of 165803028810 is 18820308561.

It is a super-2 number, since 2×165803028810² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8876149 + ... + 8894808.

It is an arithmetic number, because the mean of its divisors is an integer number (12475212516).

Almost surely, 2^165803028810 is an apocalyptic number.

165803028810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165803028810 is an abundant number, since it is smaller than the sum of its proper divisors (233403771702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165803028810 is a wasteful number, since it uses less digits than its factorization.

165803028810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771278.

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 165803028810 in words is "one hundred sixty-five billion, eight hundred three million, twenty-eight thousand, eight hundred ten".