20300476253 has 2 divisors, whose sum is σ = 20300476254. Its totient is φ = 20300476252.

The previous prime is 20300476249. The next prime is 20300476279. The reversal of 20300476253 is 35267400302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16002756004 + 4297720249 = 126502^2 + 65557^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300476253 - 2² = 20300476249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20300476753) 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, 10150238126 + 10150238127.

It is an arithmetic number, because the mean of its divisors is an integer number (10150238127).

Almost surely, 2^20300476253 is an apocalyptic number.

It is an amenable number.

20300476253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300476253 is an equidigital number, since it uses as much as digits as its factorization.

20300476253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 20300476253 its reverse (35267400302), we get a palindrome (55567876555).

The spelling of 20300476253 in words is "twenty billion, three hundred million, four hundred seventy-six thousand, two hundred fifty-three".