162597305209 has 4 divisors (see below), whose sum is σ = 164207179620. Its totient is φ = 160987430800.

The previous prime is 162597305179. The next prime is 162597305327. The reversal of 162597305209 is 902503795261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 902503795261 = 4801 ⋅187982461.

It can be written as a sum of positive squares in 2 ways, for example, as 123074672400 + 39522632809 = 350820^2 + 198803^2 .

It is a cyclic number.

It is not a de Polignac number, because 162597305209 - 2²¹ = 162595208057 is a prime.

It is a super-2 number, since 2×162597305209² (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. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162597309209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804937054 + ... + 804937255.

It is an arithmetic number, because the mean of its divisors is an integer number (41051794905).

Almost surely, 2^162597305209 is an apocalyptic number.

It is an amenable number.

162597305209 is a deficient number, since it is larger than the sum of its proper divisors (1609874411).

162597305209 is a wasteful number, since it uses less digits than its factorization.

162597305209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609874410.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 162597305209 in words is "one hundred sixty-two billion, five hundred ninety-seven million, three hundred five thousand, two hundred nine".