40425236618617 has 2 divisors, whose sum is σ = 40425236618618. Its totient is φ = 40425236618616.

The previous prime is 40425236618609. The next prime is 40425236618623. The reversal of 40425236618617 is 71681663252404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34343631798336 + 6081604820281 = 5860344^2 + 2466091^2 .

It is a cyclic number.

It is not a de Polignac number, because 40425236618617 - 2³ = 40425236618609 is a prime.

It is a super-3 number, since 3×40425236618617³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40425231618617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212618309308 + 20212618309309.

It is an arithmetic number, because the mean of its divisors is an integer number (20212618309309).

Almost surely, 2^{40425236618617} is an apocalyptic number.

It is an amenable number.

40425236618617 is a deficient number, since it is larger than the sum of its proper divisors (1).

40425236618617 is an equidigital number, since it uses as much as digits as its factorization.

40425236618617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 40425236618617 in words is "forty trillion, four hundred twenty-five billion, two hundred thirty-six million, six hundred eighteen thousand, six hundred seventeen".