165563244333122 has 4 divisors (see below), whose sum is σ = 248344866499686. Its totient is φ = 82781622166560.

The previous prime is 165563244333079. The next prime is 165563244333209. The reversal of 165563244333122 is 221333442365561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96043351629241 + 69519892703881 = 9800171^2 + 8337859^2 .

It is a super-2 number, since 2×165563244333122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41390811083279 + ... + 41390811083282.

Almost surely, 2^{165563244333122} is an apocalyptic number.

165563244333122 is a deficient number, since it is larger than the sum of its proper divisors (82781622166564).

165563244333122 is an equidigital number, since it uses as much as digits as its factorization.

165563244333122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82781622166563.

The product of its digits is 9331200, while the sum is 50.

Adding to 165563244333122 its reverse (221333442365561), we get a palindrome (386896686698683).

The spelling of 165563244333122 in words is "one hundred sixty-five trillion, five hundred sixty-three billion, two hundred forty-four million, three hundred thirty-three thousand, one hundred twenty-two".