6921583861311 has 24 divisors (see below), whose sum is σ = 11429172844544. Its totient is φ = 3954129417360.

The previous prime is 6921583861307. The next prime is 6921583861321. The reversal of 6921583861311 is 1131683851296.

6921583861311 is a `hidden beast` number, since 6 + 9 + 2 + 1 + 5 + 8 + 3 + 8 + 613 + 11 = 666.

It is not a de Polignac number, because 6921583861311 - 2² = 6921583861307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921583861321) 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 in 23 ways as a sum of consecutive naturals, for example, 14504455 + ... + 14974056.

Almost surely, 2^{6921583861311} is an apocalyptic number.

6921583861311 is a deficient number, since it is larger than the sum of its proper divisors (4507588983233).

6921583861311 is a wasteful number, since it uses less digits than its factorization.

6921583861311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29482251 (or 29482248 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 6921583861311 in words is "six trillion, nine hundred twenty-one billion, five hundred eighty-three million, eight hundred sixty-one thousand, three hundred eleven".