165499924753 has 8 divisors (see below), whose sum is σ = 171217739880. Its totient is φ = 159782837760.

The previous prime is 165499924739. The next prime is 165499924801. The reversal of 165499924753 is 357429994561.

It can be written as a sum of positive squares in 4 ways, for example, as 46221560064 + 119278364689 = 214992^2 + 345367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165499924753 is a prime.

It is a super-2 number, since 2×165499924753² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165499924153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302283 + ... + 649903.

It is an arithmetic number, because the mean of its divisors is an integer number (21402217485).

Almost surely, 2^165499924753 is an apocalyptic number.

It is an amenable number.

165499924753 is a deficient number, since it is larger than the sum of its proper divisors (5717815127).

165499924753 is a wasteful number, since it uses less digits than its factorization.

165499924753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364067.

The product of its digits is 73483200, while the sum is 64.

The spelling of 165499924753 in words is "one hundred sixty-five billion, four hundred ninety-nine million, nine hundred twenty-four thousand, seven hundred fifty-three".