40424434373 has 2 divisors, whose sum is σ = 40424434374. Its totient is φ = 40424434372.

The previous prime is 40424434243. The next prime is 40424434433. The reversal of 40424434373 is 37343442404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40168978084 + 255456289 = 200422^2 + 15983^2 .

It is a cyclic number.

It is not a de Polignac number, because 40424434373 - 2²⁸ = 40155998917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40424434073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212217186 + 20212217187.

It is an arithmetic number, because the mean of its divisors is an integer number (20212217187).

Almost surely, 2^40424434373 is an apocalyptic number.

It is an amenable number.

40424434373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40424434373 is an equidigital number, since it uses as much as digits as its factorization.

40424434373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 38.

Adding to 40424434373 its reverse (37343442404), we get a palindrome (77767876777).

The spelling of 40424434373 in words is "forty billion, four hundred twenty-four million, four hundred thirty-four thousand, three hundred seventy-three".