6726491421156 has 144 divisors (see below), whose sum is σ = 18805083897600. Its totient is φ = 2014336037376.

The previous prime is 6726491421127. The next prime is 6726491421163. The reversal of 6726491421156 is 6511241946276.

6726491421156 is a `hidden beast` number, since 6 + 7 + 2 + 64 + 9 + 1 + 421 + 156 = 666.

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 47 ways as a sum of consecutive naturals, for example, 3083080 + ... + 4791488.

It is an arithmetic number, because the mean of its divisors is an integer number (130590860400).

Almost surely, 2^{6726491421156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6726491421156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9402541948800).

6726491421156 is an abundant number, since it is smaller than the sum of its proper divisors (12078592476444).

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

6726491421156 is a wasteful number, since it uses less digits than its factorization.

6726491421156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708658 (or 1708653 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 6726491421156 in words is "six trillion, seven hundred twenty-six billion, four hundred ninety-one million, four hundred twenty-one thousand, one hundred fifty-six".