320725644899 has 8 divisors (see below), whose sum is σ = 349914481392. Its totient is φ = 291542135040.

The previous prime is 320725644871. The next prime is 320725644907. The reversal of 320725644899 is 998446527023.

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 320725644899 - 2³⁶ = 252006168163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320725644829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205234 + ... + 1447079.

It is an arithmetic number, because the mean of its divisors is an integer number (43739310174).

Almost surely, 2^320725644899 is an apocalyptic number.

320725644899 is a deficient number, since it is larger than the sum of its proper divisors (29188836493).

320725644899 is a wasteful number, since it uses less digits than its factorization.

320725644899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663317.

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 320725644899 in words is "three hundred twenty billion, seven hundred twenty-five million, six hundred forty-four thousand, eight hundred ninety-nine".