40023263593 has 2 divisors, whose sum is σ = 40023263594. Its totient is φ = 40023263592.

The previous prime is 40023263569. The next prime is 40023263597. The reversal of 40023263593 is 39536232004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33490098009 + 6533165584 = 183003^2 + 80828^2 .

It is a cyclic number.

It is not a de Polignac number, because 40023263593 - 2²¹ = 40021166441 is a prime.

It is not a weakly prime, because it can be changed into another prime (40023263597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011631796 + 20011631797.

It is an arithmetic number, because the mean of its divisors is an integer number (20011631797).

Almost surely, 2^40023263593 is an apocalyptic number.

It is an amenable number.

40023263593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40023263593 is an equidigital number, since it uses as much as digits as its factorization.

40023263593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 40023263593 its reverse (39536232004), we get a palindrome (79559495597).

The spelling of 40023263593 in words is "forty billion, twenty-three million, two hundred sixty-three thousand, five hundred ninety-three".