720321320233 has 4 divisors (see below), whose sum is σ = 751639638528. Its totient is φ = 689003001940.

The previous prime is 720321320221. The next prime is 720321320261. The reversal of 720321320233 is 332023123027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 720321320233 - 2²⁵ = 720287765801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720321320833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15659159113 + ... + 15659159158.

It is an arithmetic number, because the mean of its divisors is an integer number (187909909632).

Almost surely, 2^720321320233 is an apocalyptic number.

It is an amenable number.

720321320233 is a deficient number, since it is larger than the sum of its proper divisors (31318318295).

720321320233 is a wasteful number, since it uses less digits than its factorization.

720321320233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31318318294.

The product of its (nonzero) digits is 9072, while the sum is 28.

The spelling of 720321320233 in words is "seven hundred twenty billion, three hundred twenty-one million, three hundred twenty thousand, two hundred thirty-three".