40254544517699 has 2 divisors, whose sum is σ = 40254544517700. Its totient is φ = 40254544517698.

The previous prime is 40254544517641. The next prime is 40254544517771. The reversal of 40254544517699 is 99671544545204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40254544517699 - 2²⁰ = 40254543469123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40254541517699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127272258849 + 20127272258850.

It is an arithmetic number, because the mean of its divisors is an integer number (20127272258850).

Almost surely, 2^{40254544517699} is an apocalyptic number.

40254544517699 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254544517699 is an equidigital number, since it uses as much as digits as its factorization.

40254544517699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728000, while the sum is 65.

The spelling of 40254544517699 in words is "forty trillion, two hundred fifty-four billion, five hundred forty-four million, five hundred seventeen thousand, six hundred ninety-nine".