844774720722 has 48 divisors (see below), whose sum is σ = 1867781680128. Its totient is φ = 275848653600.

The previous prime is 844774720679. The next prime is 844774720723. The reversal of 844774720722 is 227027477448.

It is a happy number.

844774720722 is a `hidden beast` number, since 84 + 4 + 77 + 472 + 0 + 7 + 22 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (844774720723) 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 23 ways as a sum of consecutive naturals, for example, 75154 + ... + 1301997.

It is an arithmetic number, because the mean of its divisors is an integer number (38912118336).

Almost surely, 2^844774720722 is an apocalyptic number.

844774720722 is an abundant number, since it is smaller than the sum of its proper divisors (1023006959406).

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

844774720722 is a wasteful number, since it uses less digits than its factorization.

844774720722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377855 (or 1377852 counting only the distinct ones).

The product of its (nonzero) digits is 9834496, while the sum is 54.

The spelling of 844774720722 in words is "eight hundred forty-four billion, seven hundred seventy-four million, seven hundred twenty thousand, seven hundred twenty-two".