165536158437 has 48 divisors (see below), whose sum is σ = 267634785600. Its totient is φ = 101640655872.

The previous prime is 165536158433. The next prime is 165536158481. The reversal of 165536158437 is 734851635561.

165536158437 is a `hidden beast` number, since 1 + 6 + 5 + 53 + 6 + 1 + 584 + 3 + 7 = 666.

165536158437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165536158437 - 2² = 165536158433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165536158433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1360038 + ... + 1476744.

It is an arithmetic number, because the mean of its divisors is an integer number (5575724700).

Almost surely, 2^165536158437 is an apocalyptic number.

It is an amenable number.

165536158437 is a deficient number, since it is larger than the sum of its proper divisors (102098627163).

165536158437 is a wasteful number, since it uses less digits than its factorization.

165536158437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117184 (or 117172 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 165536158437 in words is "one hundred sixty-five billion, five hundred thirty-six million, one hundred fifty-eight thousand, four hundred thirty-seven".