7426672321844 has 6 divisors (see below), whose sum is σ = 12996676563234. Its totient is φ = 3713336160920.

The previous prime is 7426672321843. The next prime is 7426672321853. The reversal of 7426672321844 is 4481232766247.

It can be written as a sum of positive squares in only one way, i.e., 4459107955600 + 2967564366244 = 2111660^2 + 1722662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7426672321844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7426672321843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 928334040227 + ... + 928334040234.

It is an arithmetic number, because the mean of its divisors is an integer number (2166112760539).

Almost surely, 2^{7426672321844} is an apocalyptic number.

It is an amenable number.

7426672321844 is a deficient number, since it is larger than the sum of its proper divisors (5570004241390).

7426672321844 is a wasteful number, since it uses less digits than its factorization.

7426672321844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856668080465 (or 1856668080463 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 56.

The spelling of 7426672321844 in words is "seven trillion, four hundred twenty-six billion, six hundred seventy-two million, three hundred twenty-one thousand, eight hundred forty-four".