165895862836 has 12 divisors (see below), whose sum is σ = 316710283680. Its totient is φ = 75407210360.

The previous prime is 165895862809. The next prime is 165895862903. The reversal of 165895862836 is 638268598561.

It is a super-2 number, since 2×165895862836² (a number of 23 digits) contains 22 as substring.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1885180216 + ... + 1885180303.

It is an arithmetic number, because the mean of its divisors is an integer number (26392523640).

Almost surely, 2^165895862836 is an apocalyptic number.

It is an amenable number.

165895862836 is a deficient number, since it is larger than the sum of its proper divisors (150814420844).

165895862836 is a wasteful number, since it uses less digits than its factorization.

165895862836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770360534 (or 3770360532 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 67.

The spelling of 165895862836 in words is "one hundred sixty-five billion, eight hundred ninety-five million, eight hundred sixty-two thousand, eight hundred thirty-six".