6812136861 has 32 divisors (see below), whose sum is σ = 10213050240. Its totient is φ = 4013420544.

The previous prime is 6812136809. The next prime is 6812136883. The reversal of 6812136861 is 1686312186.

It is not a de Polignac number, because 6812136861 - 2¹³ = 6812128669 is a prime.

It is a super-2 number, since 2×6812136861² = 92810417225989866642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6812136161) 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 in 31 ways as a sum of consecutive naturals, for example, 78391 + ... + 140603.

It is an arithmetic number, because the mean of its divisors is an integer number (319157820).

Almost surely, 2^6812136861 is an apocalyptic number.

It is an amenable number.

6812136861 is a deficient number, since it is larger than the sum of its proper divisors (3400913379).

6812136861 is a wasteful number, since it uses less digits than its factorization.

6812136861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62365.

The product of its digits is 82944, while the sum is 42.

The square root of 6812136861 is about 82535.6702341479. The cubic root of 6812136861 is about 1895.6629478725.

The spelling of 6812136861 in words is "six billion, eight hundred twelve million, one hundred thirty-six thousand, eight hundred sixty-one".