320260404256641 has 6 divisors (see below), whose sum is σ = 462598361704050. Its totient is φ = 213506936171088.

The previous prime is 320260404256579. The next prime is 320260404256651. The reversal of 320260404256641 is 146652404062023.

It is a happy number.

320260404256641 is a `hidden beast` number, since 3 + 2 + 0 + 2 + 6 + 0 + 4 + 0 + 42 + 566 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 284527028749041 + 35733375507600 = 16867929^2 + 5977740^2 .

It is not a de Polignac number, because 320260404256641 - 2⁶ = 320260404256577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320260404256651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17792244680916 + ... + 17792244680933.

It is an arithmetic number, because the mean of its divisors is an integer number (77099726950675).

Almost surely, 2^{320260404256641} is an apocalyptic number.

It is an amenable number.

320260404256641 is a deficient number, since it is larger than the sum of its proper divisors (142337957447409).

320260404256641 is a wasteful number, since it uses less digits than its factorization.

320260404256641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35584489361855 (or 35584489361852 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 320260404256641 in words is "three hundred twenty trillion, two hundred sixty billion, four hundred four million, two hundred fifty-six thousand, six hundred forty-one".