320450722327457 has 4 divisors (see below), whose sum is σ = 320450799610260. Its totient is φ = 320450645044656.

The previous prime is 320450722327403. The next prime is 320450722327471. The reversal of 320450722327457 is 754723227054023.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 157110155540881 + 163340566786576 = 12534359^2 + 12780476^2 .

It is a cyclic number.

It is not a de Polignac number, because 320450722327457 - 2⁴⁰ = 319351210699681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320450722327399 and 320450722327408.

It is not an unprimeable number, because it can be changed into a prime (320450724327457) 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, 32046518 + ... + 40839695.

It is an arithmetic number, because the mean of its divisors is an integer number (80112699902565).

Almost surely, 2^{320450722327457} is an apocalyptic number.

It is an amenable number.

320450722327457 is a deficient number, since it is larger than the sum of its proper divisors (77282803).

320450722327457 is an equidigital number, since it uses as much as digits as its factorization.

320450722327457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77282802.

The product of its (nonzero) digits is 19756800, while the sum is 53.

The spelling of 320450722327457 in words is "three hundred twenty trillion, four hundred fifty billion, seven hundred twenty-two million, three hundred twenty-seven thousand, four hundred fifty-seven".