6911220456 has 128 divisors (see below), whose sum is σ = 22300358400. Its totient is φ = 1942237440.

The previous prime is 6911220439. The next prime is 6911220457. The reversal of 6911220456 is 6540221196.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6911220456.

It is not an unprimeable number, because it can be changed into a prime (6911220457) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 54766 + ... + 129698.

It is an arithmetic number, because the mean of its divisors is an integer number (174221550).

Almost surely, 2^6911220456 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 6911220456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11150179200).

6911220456 is an abundant number, since it is smaller than the sum of its proper divisors (15389137944).

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

6911220456 is a wasteful number, since it uses less digits than its factorization.

6911220456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75016 (or 75006 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6911220456 is about 83133.7504025892. The cubic root of 6911220456 is about 1904.8096480396.

The spelling of 6911220456 in words is "six billion, nine hundred eleven million, two hundred twenty thousand, four hundred fifty-six".