6522974920391 has 2 divisors, whose sum is σ = 6522974920392. Its totient is φ = 6522974920390.

The previous prime is 6522974920373. The next prime is 6522974920417. The reversal of 6522974920391 is 1930294792256.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6522974920391 - 2¹⁴ = 6522974904007 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6522974920391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6522974920321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261487460195 + 3261487460196.

It is an arithmetic number, because the mean of its divisors is an integer number (3261487460196).

Almost surely, 2^{6522974920391} is an apocalyptic number.

6522974920391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6522974920391 is an equidigital number, since it uses as much as digits as its factorization.

6522974920391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 6522974920391 in words is "six trillion, five hundred twenty-two billion, nine hundred seventy-four million, nine hundred twenty thousand, three hundred ninety-one".