40140382823 has 2 divisors, whose sum is σ = 40140382824. Its totient is φ = 40140382822.

The previous prime is 40140382819. The next prime is 40140382859. The reversal of 40140382823 is 32828304104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40140382823 - 2² = 40140382819 is a prime.

It is a super-2 number, since 2×40140382823² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40140382873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20070191411 + 20070191412.

It is an arithmetic number, because the mean of its divisors is an integer number (20070191412).

Almost surely, 2^40140382823 is an apocalyptic number.

40140382823 is a deficient number, since it is larger than the sum of its proper divisors (1).

40140382823 is an equidigital number, since it uses as much as digits as its factorization.

40140382823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 40140382823 its reverse (32828304104), we get a palindrome (72968686927).

The spelling of 40140382823 in words is "forty billion, one hundred forty million, three hundred eighty-two thousand, eight hundred twenty-three".