40020244373 has 2 divisors, whose sum is σ = 40020244374. Its totient is φ = 40020244372.

The previous prime is 40020244337. The next prime is 40020244447. The reversal of 40020244373 is 37344202004.

40020244373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (40020244337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35842819684 + 4177424689 = 189322^2 + 64633^2 .

It is a cyclic number.

It is not a de Polignac number, because 40020244373 - 2¹⁰ = 40020243349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40020244333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010122186 + 20010122187.

It is an arithmetic number, because the mean of its divisors is an integer number (20010122187).

Almost surely, 2^40020244373 is an apocalyptic number.

It is an amenable number.

40020244373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020244373 is an equidigital number, since it uses as much as digits as its factorization.

40020244373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 29.

Adding to 40020244373 its reverse (37344202004), we get a palindrome (77364446377).

The spelling of 40020244373 in words is "forty billion, twenty million, two hundred forty-four thousand, three hundred seventy-three".