20040174373 has 2 divisors, whose sum is σ = 20040174374. Its totient is φ = 20040174372.

The previous prime is 20040174307. The next prime is 20040174377. The reversal of 20040174373 is 37347104002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19606160484 + 434013889 = 140022^2 + 20833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20040174373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20040174377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020087186 + 10020087187.

It is an arithmetic number, because the mean of its divisors is an integer number (10020087187).

Almost surely, 2^20040174373 is an apocalyptic number.

It is an amenable number.

20040174373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040174373 is an equidigital number, since it uses as much as digits as its factorization.

20040174373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

Adding to 20040174373 its reverse (37347104002), we get a palindrome (57387278375).

The spelling of 20040174373 in words is "twenty billion, forty million, one hundred seventy-four thousand, three hundred seventy-three".