320465067505 has 16 divisors (see below), whose sum is σ = 423590903424. Its totient is φ = 230802727680.

The previous prime is 320465067493. The next prime is 320465067539. The reversal of 320465067505 is 505760564023.

It is not a de Polignac number, because 320465067505 - 2⁵ = 320465067473 is a prime.

It is a super-3 number, since 3×320465067505³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

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, 28278984 + ... + 28290313.

It is an arithmetic number, because the mean of its divisors is an integer number (26474431464).

Almost surely, 2^320465067505 is an apocalyptic number.

It is an amenable number.

320465067505 is a deficient number, since it is larger than the sum of its proper divisors (103125835919).

320465067505 is a wasteful number, since it uses less digits than its factorization.

320465067505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56569416.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 320465067505 in words is "three hundred twenty billion, four hundred sixty-five million, sixty-seven thousand, five hundred five".