6221791136 has 48 divisors (see below), whose sum is σ = 13581818208. Its totient is φ = 2781715200.

The previous prime is 6221791127. The next prime is 6221791141. The reversal of 6221791136 is 6311971226.

It is a self number, because there is not a number n which added to its sum of digits gives 6221791136.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 123410 + ... + 166353.

It is an arithmetic number, because the mean of its divisors is an integer number (282954546).

Almost surely, 2^6221791136 is an apocalyptic number.

It is an amenable number.

6221791136 is an abundant number, since it is smaller than the sum of its proper divisors (7360027072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6221791136 is a wasteful number, since it uses less digits than its factorization.

6221791136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289845 (or 289837 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 6221791136 is about 78878.3312196702. The cubic root of 6221791136 is about 1839.2403070517.

The spelling of 6221791136 in words is "six billion, two hundred twenty-one million, seven hundred ninety-one thousand, one hundred thirty-six".