320231541644545 has 16 divisors (see below), whose sum is σ = 389029734596160. Its totient is φ = 253019247234624.

The previous prime is 320231541644503. The next prime is 320231541644561. The reversal of 320231541644545 is 545446145132023.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 320231541644545 - 2⁹ = 320231541644033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119738310 + ... + 122383519.

It is an arithmetic number, because the mean of its divisors is an integer number (24314358412260).

Almost surely, 2^{320231541644545} is an apocalyptic number.

It is an amenable number.

320231541644545 is a deficient number, since it is larger than the sum of its proper divisors (68798192951615).

320231541644545 is a wasteful number, since it uses less digits than its factorization.

320231541644545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242125104.

The product of its (nonzero) digits is 6912000, while the sum is 49.

Adding to 320231541644545 its reverse (545446145132023), we get a palindrome (865677686776568).

The spelling of 320231541644545 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred forty-one million, six hundred forty-four thousand, five hundred forty-five".