6522974920321 has 2 divisors, whose sum is σ = 6522974920322. Its totient is φ = 6522974920320.

The previous prime is 6522974920289. The next prime is 6522974920333. The reversal of 6522974920321 is 1230294792256.

6522974920321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6344076375025 + 178898545296 = 2518745^2 + 422964^2 .

It is a cyclic number.

It is not a de Polignac number, because 6522974920321 - 2⁵ = 6522974920289 is a prime.

It is a super-2 number, since 2×6522974920321² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6522974920391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261487460160 + 3261487460161.

It is an arithmetic number, because the mean of its divisors is an integer number (3261487460161).

Almost surely, 2^{6522974920321} is an apocalyptic number.

It is an amenable number.

6522974920321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6522974920321 is an equidigital number, since it uses as much as digits as its factorization.

6522974920321 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 52.

The spelling of 6522974920321 in words is "six trillion, five hundred twenty-two billion, nine hundred seventy-four million, nine hundred twenty thousand, three hundred twenty-one".