40545849593 has 2 divisors, whose sum is σ = 40545849594. Its totient is φ = 40545849592.

The previous prime is 40545849523. The next prime is 40545849611. The reversal of 40545849593 is 39594854504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36104560144 + 4441289449 = 190012^2 + 66643^2 .

It is a cyclic number.

It is not a de Polignac number, because 40545849593 - 2³⁴ = 23365980409 is a prime.

It is not a weakly prime, because it can be changed into another prime (40545849523) 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, 20272924796 + 20272924797.

It is an arithmetic number, because the mean of its divisors is an integer number (20272924797).

Almost surely, 2^40545849593 is an apocalyptic number.

It is an amenable number.

40545849593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40545849593 is an equidigital number, since it uses as much as digits as its factorization.

40545849593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552000, while the sum is 56.

The spelling of 40545849593 in words is "forty billion, five hundred forty-five million, eight hundred forty-nine thousand, five hundred ninety-three".