40340465423 has 2 divisors, whose sum is σ = 40340465424. Its totient is φ = 40340465422.

The previous prime is 40340465381. The next prime is 40340465441. The reversal of 40340465423 is 32456404304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40340465423 - 2¹⁶ = 40340399887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340465453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170232711 + 20170232712.

It is an arithmetic number, because the mean of its divisors is an integer number (20170232712).

Almost surely, 2^40340465423 is an apocalyptic number.

40340465423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340465423 is an equidigital number, since it uses as much as digits as its factorization.

40340465423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 40340465423 its reverse (32456404304), we get a palindrome (72796869727).

The spelling of 40340465423 in words is "forty billion, three hundred forty million, four hundred sixty-five thousand, four hundred twenty-three".