165016611243 has 24 divisors (see below), whose sum is σ = 260108415216. Its totient is φ = 99978436800.

The previous prime is 165016611191. The next prime is 165016611301. The reversal of 165016611243 is 342116610561.

165016611243 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 16 + 611 + 24 + 3 = 666.

It is not a de Polignac number, because 165016611243 - 2¹⁰ = 165016610219 is a prime.

It is a super-2 number, since 2×165016611243² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165016611198 and 165016611207.

It is not an unprimeable number, because it can be changed into a prime (165016611343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52921 + ... + 576917.

It is an arithmetic number, because the mean of its divisors is an integer number (10837850634).

Almost surely, 2^165016611243 is an apocalyptic number.

165016611243 is a deficient number, since it is larger than the sum of its proper divisors (95091803973).

165016611243 is a wasteful number, since it uses less digits than its factorization.

165016611243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527195 (or 527192 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 165016611243 in words is "one hundred sixty-five billion, sixteen million, six hundred eleven thousand, two hundred forty-three".