320725344653727 has 64 divisors (see below), whose sum is σ = 473340220953600. Its totient is φ = 191957258142720.

The previous prime is 320725344653687. The next prime is 320725344653741. The reversal of 320725344653727 is 727356443527023.

It is not a de Polignac number, because 320725344653727 - 2⁶ = 320725344653663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320725344657727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160486299 + ... + 162472467.

It is an arithmetic number, because the mean of its divisors is an integer number (7395940952400).

Almost surely, 2^{320725344653727} is an apocalyptic number.

320725344653727 is a deficient number, since it is larger than the sum of its proper divisors (152614876299873).

320725344653727 is a wasteful number, since it uses less digits than its factorization.

320725344653727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987008.

The product of its (nonzero) digits is 177811200, while the sum is 60.

The spelling of 320725344653727 in words is "three hundred twenty trillion, seven hundred twenty-five billion, three hundred forty-four million, six hundred fifty-three thousand, seven hundred twenty-seven".