6551992418591 has 2 divisors, whose sum is σ = 6551992418592. Its totient is φ = 6551992418590.

The previous prime is 6551992418561. The next prime is 6551992418627. The reversal of 6551992418591 is 1958142991556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6551992418591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551992418561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275996209295 + 3275996209296.

It is an arithmetic number, because the mean of its divisors is an integer number (3275996209296).

Almost surely, 2^{6551992418591} is an apocalyptic number.

6551992418591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551992418591 is an equidigital number, since it uses as much as digits as its factorization.

6551992418591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992000, while the sum is 65.

The spelling of 6551992418591 in words is "six trillion, five hundred fifty-one billion, nine hundred ninety-two million, four hundred eighteen thousand, five hundred ninety-one".