6520991234227 has 2 divisors, whose sum is σ = 6520991234228. Its totient is φ = 6520991234226.

The previous prime is 6520991234189. The next prime is 6520991234239. The reversal of 6520991234227 is 7224321990256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6520991234227 - 2³⁵ = 6486631495859 is a prime.

It is not a weakly prime, because it can be changed into another prime (6520991234257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260495617113 + 3260495617114.

It is an arithmetic number, because the mean of its divisors is an integer number (3260495617114).

Almost surely, 2^{6520991234227} is an apocalyptic number.

6520991234227 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520991234227 is an equidigital number, since it uses as much as digits as its factorization.

6520991234227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 6520991234227 in words is "six trillion, five hundred twenty billion, nine hundred ninety-one million, two hundred thirty-four thousand, two hundred twenty-seven".