165224243473 has 12 divisors (see below), whose sum is σ = 168171811308. Its totient is φ = 162325463040.

The previous prime is 165224243461. The next prime is 165224243519. The reversal of 165224243473 is 374342422561.

It can be written as a sum of positive squares in 6 ways, for example, as 50376455809 + 114847787664 = 224447^2 + 338892^2 .

It is not a de Polignac number, because 165224243473 - 2³³ = 156634308881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165224243413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1309233 + ... + 1429873.

It is an arithmetic number, because the mean of its divisors is an integer number (14014317609).

Almost surely, 2^165224243473 is an apocalyptic number.

It is an amenable number.

165224243473 is a deficient number, since it is larger than the sum of its proper divisors (2947567835).

165224243473 is an equidigital number, since it uses as much as digits as its factorization.

165224243473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121044 (or 120971 counting only the distinct ones).

The product of its digits is 967680, while the sum is 43.

The spelling of 165224243473 in words is "one hundred sixty-five billion, two hundred twenty-four million, two hundred forty-three thousand, four hundred seventy-three".