165535360456 has 32 divisors (see below), whose sum is σ = 318166087680. Its totient is φ = 80693827200.

The previous prime is 165535360451. The next prime is 165535360481. The reversal of 165535360456 is 654063535561.

It is a super-2 number, since 2×165535360456² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (165535360451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 310945 + ... + 654031.

It is an arithmetic number, because the mean of its divisors is an integer number (9942690240).

Almost surely, 2^165535360456 is an apocalyptic number.

It is an amenable number.

165535360456 is a deficient number, since it is larger than the sum of its proper divisors (152630727224).

165535360456 is a wasteful number, since it uses less digits than its factorization.

165535360456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344605 (or 344601 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 49.

The spelling of 165535360456 in words is "one hundred sixty-five billion, five hundred thirty-five million, three hundred sixty thousand, four hundred fifty-six".