40205504323 has 2 divisors, whose sum is σ = 40205504324. Its totient is φ = 40205504322.

The previous prime is 40205504321. The next prime is 40205504399. The reversal of 40205504323 is 32340550204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40205504323 - 2¹ = 40205504321 is a prime.

Together with 40205504321, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40205504291 and 40205504300.

It is not a weakly prime, because it can be changed into another prime (40205504321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102752161 + 20102752162.

It is an arithmetic number, because the mean of its divisors is an integer number (20102752162).

Almost surely, 2^40205504323 is an apocalyptic number.

40205504323 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205504323 is an equidigital number, since it uses as much as digits as its factorization.

40205504323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 28.

The spelling of 40205504323 in words is "forty billion, two hundred five million, five hundred four thousand, three hundred twenty-three".