145216320323 has 4 divisors (see below), whose sum is σ = 145219218648. Its totient is φ = 145213422000.

The previous prime is 145216320283. The next prime is 145216320349. The reversal of 145216320323 is 323023612541.

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

It is a cyclic number.

It is not a de Polignac number, because 145216320323 - 2²⁸ = 144947884867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145216320323.

It is not an unprimeable number, because it can be changed into a prime (145216320383) 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, 1372661 + ... + 1474662.

It is an arithmetic number, because the mean of its divisors is an integer number (36304804662).

Almost surely, 2^145216320323 is an apocalyptic number.

145216320323 is a deficient number, since it is larger than the sum of its proper divisors (2898325).

145216320323 is an equidigital number, since it uses as much as digits as its factorization.

145216320323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898324.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 145216320323 its reverse (323023612541), we get a palindrome (468239932864).

The spelling of 145216320323 in words is "one hundred forty-five billion, two hundred sixteen million, three hundred twenty thousand, three hundred twenty-three".