40345257193 has 2 divisors, whose sum is σ = 40345257194. Its totient is φ = 40345257192.

The previous prime is 40345257181. The next prime is 40345257217. The reversal of 40345257193 is 39175254304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28430006544 + 11915250649 = 168612^2 + 109157^2 .

It is a cyclic number.

It is not a de Polignac number, because 40345257193 - 2¹³ = 40345249001 is a prime.

It is not a weakly prime, because it can be changed into another prime (40345257133) 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, 20172628596 + 20172628597.

It is an arithmetic number, because the mean of its divisors is an integer number (20172628597).

Almost surely, 2^40345257193 is an apocalyptic number.

It is an amenable number.

40345257193 is a deficient number, since it is larger than the sum of its proper divisors (1).

40345257193 is an equidigital number, since it uses as much as digits as its factorization.

40345257193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 40345257193 in words is "forty billion, three hundred forty-five million, two hundred fifty-seven thousand, one hundred ninety-three".