320521222707 has 24 divisors (see below), whose sum is σ = 526378194576. Its totient is φ = 172381160448.

The previous prime is 320521222699. The next prime is 320521222783. The reversal of 320521222707 is 707222125023.

It is not a de Polignac number, because 320521222707 - 2³ = 320521222699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320521222207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64127398 + ... + 64132395.

It is an arithmetic number, because the mean of its divisors is an integer number (21932424774).

Almost surely, 2^320521222707 is an apocalyptic number.

320521222707 is a deficient number, since it is larger than the sum of its proper divisors (205856971869).

320521222707 is a wasteful number, since it uses less digits than its factorization.

320521222707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128259827 (or 128259820 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The spelling of 320521222707 in words is "three hundred twenty billion, five hundred twenty-one million, two hundred twenty-two thousand, seven hundred seven".