6537214861 has 2 divisors, whose sum is σ = 6537214862. Its totient is φ = 6537214860.

The previous prime is 6537214811. The next prime is 6537214909. The reversal of 6537214861 is 1684127356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5837876836 + 699338025 = 76406^2 + 26445^2 .

It is a cyclic number.

It is not a de Polignac number, because 6537214861 - 2²¹ = 6535117709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6537214811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3268607430 + 3268607431.

It is an arithmetic number, because the mean of its divisors is an integer number (3268607431).

Almost surely, 2^6537214861 is an apocalyptic number.

It is an amenable number.

6537214861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6537214861 is an equidigital number, since it uses as much as digits as its factorization.

6537214861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 6537214861 is about 80853.0448468083. The cubic root of 6537214861 is about 1869.8104663634.

The spelling of 6537214861 in words is "six billion, five hundred thirty-seven million, two hundred fourteen thousand, eight hundred sixty-one".