20315262303653 has 2 divisors, whose sum is σ = 20315262303654. Its totient is φ = 20315262303652.

The previous prime is 20315262303529. The next prime is 20315262303667. The reversal of 20315262303653 is 35630326251302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17730440827009 + 2584821476644 = 4210753^2 + 1607738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20315262303653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20315262303653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315262303673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157631151826 + 10157631151827.

It is an arithmetic number, because the mean of its divisors is an integer number (10157631151827).

Almost surely, 2^{20315262303653} is an apocalyptic number.

It is an amenable number.

20315262303653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315262303653 is an equidigital number, since it uses as much as digits as its factorization.

20315262303653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 41.

Adding to 20315262303653 its reverse (35630326251302), we get a palindrome (55945588554955).

The spelling of 20315262303653 in words is "twenty trillion, three hundred fifteen billion, two hundred sixty-two million, three hundred three thousand, six hundred fifty-three".