331341545256641 has 2 divisors, whose sum is σ = 331341545256642. Its totient is φ = 331341545256640.

The previous prime is 331341545256619. The next prime is 331341545256671. The reversal of 331341545256641 is 146652545143133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325910664576016 + 5430880680625 = 18052996^2 + 2330425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331341545256641 is a prime.

It is a super-2 number, since 2×331341545256641² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331341545256671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165670772628320 + 165670772628321.

It is an arithmetic number, because the mean of its divisors is an integer number (165670772628321).

Almost surely, 2^{331341545256641} is an apocalyptic number.

It is an amenable number.

331341545256641 is a deficient number, since it is larger than the sum of its proper divisors (1).

331341545256641 is an equidigital number, since it uses as much as digits as its factorization.

331341545256641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552000, while the sum is 53.

The spelling of 331341545256641 in words is "three hundred thirty-one trillion, three hundred forty-one billion, five hundred forty-five million, two hundred fifty-six thousand, six hundred forty-one".