320421011545 has 8 divisors (see below), whose sum is σ = 389137807296. Its totient is φ = 253248413616.

The previous prime is 320421011507. The next prime is 320421011633. The reversal of 320421011545 is 545110124023.

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 320421011545 - 2⁹ = 320421011033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386048997 + ... + 386049826.

It is an arithmetic number, because the mean of its divisors is an integer number (48642225912).

Almost surely, 2^320421011545 is an apocalyptic number.

It is an amenable number.

320421011545 is a deficient number, since it is larger than the sum of its proper divisors (68716795751).

320421011545 is an equidigital number, since it uses as much as digits as its factorization.

320421011545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772098911.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 320421011545 its reverse (545110124023), we get a palindrome (865531135568).

The spelling of 320421011545 in words is "three hundred twenty billion, four hundred twenty-one million, eleven thousand, five hundred forty-five".