165612225963 has 8 divisors (see below), whose sum is σ = 220819480128. Its totient is φ = 110406561224.

The previous prime is 165612225953. The next prime is 165612225983. The reversal of 165612225963 is 369522216561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 165612225963 - 2¹² = 165612221867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165612225913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128181 + ... + 589622.

It is an arithmetic number, because the mean of its divisors is an integer number (27602435016).

Almost surely, 2^165612225963 is an apocalyptic number.

165612225963 is a deficient number, since it is larger than the sum of its proper divisors (55207254165).

165612225963 is an equidigital number, since it uses as much as digits as its factorization.

165612225963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794713.

The product of its digits is 1166400, while the sum is 48.

The spelling of 165612225963 in words is "one hundred sixty-five billion, six hundred twelve million, two hundred twenty-five thousand, nine hundred sixty-three".