6580997641 has 2 divisors, whose sum is σ = 6580997642. Its totient is φ = 6580997640.

The previous prime is 6580997639. The next prime is 6580997743. The reversal of 6580997641 is 1467990856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5560834041 + 1020163600 = 74571^2 + 31940^2 .

It is a cyclic number.

It is not a de Polignac number, because 6580997641 - 2¹ = 6580997639 is a prime.

Together with 6580997639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6580997141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3290498820 + 3290498821.

It is an arithmetic number, because the mean of its divisors is an integer number (3290498821).

Almost surely, 2^6580997641 is an apocalyptic number.

It is an amenable number.

6580997641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6580997641 is an equidigital number, since it uses as much as digits as its factorization.

6580997641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 6580997641 is about 81123.3483098423. The cubic root of 6580997641 is about 1873.9755129575.

The spelling of 6580997641 in words is "six billion, five hundred eighty million, nine hundred ninety-seven thousand, six hundred forty-one".