6557067212251 has 2 divisors, whose sum is σ = 6557067212252. Its totient is φ = 6557067212250.

The previous prime is 6557067212243. The next prime is 6557067212273. The reversal of 6557067212251 is 1522127607556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6557067212251 - 2³ = 6557067212243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6557067212195 and 6557067212204.

It is not a weakly prime, because it can be changed into another prime (6557067272251) 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, 3278533606125 + 3278533606126.

It is an arithmetic number, because the mean of its divisors is an integer number (3278533606126).

Almost surely, 2^{6557067212251} is an apocalyptic number.

6557067212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557067212251 is an equidigital number, since it uses as much as digits as its factorization.

6557067212251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 6557067212251 in words is "six trillion, five hundred fifty-seven billion, sixty-seven million, two hundred twelve thousand, two hundred fifty-one".