6541215412673 has 2 divisors, whose sum is σ = 6541215412674. Its totient is φ = 6541215412672.

The previous prime is 6541215412549. The next prime is 6541215412703. The reversal of 6541215412673 is 3762145121456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4434865351744 + 2106350060929 = 2105912^2 + 1451327^2 .

It is a cyclic number.

It is not a de Polignac number, because 6541215412673 - 2²⁸ = 6540946977217 is a prime.

It is not a weakly prime, because it can be changed into another prime (6541275412673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270607706336 + 3270607706337.

It is an arithmetic number, because the mean of its divisors is an integer number (3270607706337).

Almost surely, 2^{6541215412673} is an apocalyptic number.

It is an amenable number.

6541215412673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541215412673 is an equidigital number, since it uses as much as digits as its factorization.

6541215412673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The spelling of 6541215412673 in words is "six trillion, five hundred forty-one billion, two hundred fifteen million, four hundred twelve thousand, six hundred seventy-three".