6557271613537 has 2 divisors, whose sum is σ = 6557271613538. Its totient is φ = 6557271613536.

The previous prime is 6557271613483. The next prime is 6557271613553. The reversal of 6557271613537 is 7353161727556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6549279432336 + 7992181201 = 2559156^2 + 89399^2 .

It is a cyclic number.

It is not a de Polignac number, because 6557271613537 - 2¹¹ = 6557271611489 is a prime.

It is a super-2 number, since 2×6557271613537² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6557271613567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278635806768 + 3278635806769.

It is an arithmetic number, because the mean of its divisors is an integer number (3278635806769).

Almost surely, 2^{6557271613537} is an apocalyptic number.

It is an amenable number.

6557271613537 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557271613537 is an equidigital number, since it uses as much as digits as its factorization.

6557271613537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783000, while the sum is 58.

The spelling of 6557271613537 in words is "six trillion, five hundred fifty-seven billion, two hundred seventy-one million, six hundred thirteen thousand, five hundred thirty-seven".