165560611056 has 20 divisors (see below), whose sum is σ = 427698245352. Its totient is φ = 55186870336.

The previous prime is 165560611037. The next prime is 165560611061. The reversal of 165560611056 is 650116065561.

It is a super-2 number, since 2×165560611056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165560610999 and 165560611017.

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, 1724589651 + ... + 1724589746.

Almost surely, 2^165560611056 is an apocalyptic number.

165560611056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165560611056 is an abundant number, since it is smaller than the sum of its proper divisors (262137634296).

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

165560611056 is a wasteful number, since it uses less digits than its factorization.

165560611056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449179408 (or 3449179402 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 165560611056 in words is "one hundred sixty-five billion, five hundred sixty million, six hundred eleven thousand, fifty-six".