40055242235509 has 2 divisors, whose sum is σ = 40055242235510. Its totient is φ = 40055242235508.

The previous prime is 40055242235447. The next prime is 40055242235527. The reversal of 40055242235509 is 90553224255004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26237086506225 + 13818155729284 = 5122215^2 + 3717278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40055242235509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40055242235209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027621117754 + 20027621117755.

It is an arithmetic number, because the mean of its divisors is an integer number (20027621117755).

Almost surely, 2^{40055242235509} is an apocalyptic number.

It is an amenable number.

40055242235509 is a deficient number, since it is larger than the sum of its proper divisors (1).

40055242235509 is an equidigital number, since it uses as much as digits as its factorization.

40055242235509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 40055242235509 in words is "forty trillion, fifty-five billion, two hundred forty-two million, two hundred thirty-five thousand, five hundred nine".