6812138087 has 2 divisors, whose sum is σ = 6812138088. Its totient is φ = 6812138086.

The previous prime is 6812138063. The next prime is 6812138093. The reversal of 6812138087 is 7808312186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6812138087 - 2⁸ = 6812137831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6812138287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406069043 + 3406069044.

It is an arithmetic number, because the mean of its divisors is an integer number (3406069044).

Almost surely, 2^6812138087 is an apocalyptic number.

6812138087 is a deficient number, since it is larger than the sum of its proper divisors (1).

6812138087 is an equidigital number, since it uses as much as digits as its factorization.

6812138087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 6812138087 is about 82535.6776612393. The cubic root of 6812138087 is about 1895.6630615952.

The spelling of 6812138087 in words is "six billion, eight hundred twelve million, one hundred thirty-eight thousand, eighty-seven".