20044021373 has 2 divisors, whose sum is σ = 20044021374. Its totient is φ = 20044021372.

The previous prime is 20044021351. The next prime is 20044021381. The reversal of 20044021373 is 37312044002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13815181444 + 6228839929 = 117538^2 + 78923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044021373 - 2¹² = 20044017277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20044029373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022010686 + 10022010687.

It is an arithmetic number, because the mean of its divisors is an integer number (10022010687).

Almost surely, 2^20044021373 is an apocalyptic number.

It is an amenable number.

20044021373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044021373 is an equidigital number, since it uses as much as digits as its factorization.

20044021373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20044021373 its reverse (37312044002), we get a palindrome (57356065375).

The spelling of 20044021373 in words is "twenty billion, forty-four million, twenty-one thousand, three hundred seventy-three".