2005453240253 has 2 divisors, whose sum is σ = 2005453240254. Its totient is φ = 2005453240252.

The previous prime is 2005453240211. The next prime is 2005453240283. The reversal of 2005453240253 is 3520423545002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001653380804 + 3799859449 = 1414798^2 + 61643^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005453240253 - 2³² = 2001158272957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005453240283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002726620126 + 1002726620127.

It is an arithmetic number, because the mean of its divisors is an integer number (1002726620127).

Almost surely, 2^{2005453240253} is an apocalyptic number.

It is an amenable number.

2005453240253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005453240253 is an equidigital number, since it uses as much as digits as its factorization.

2005453240253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 2005453240253 its reverse (3520423545002), we get a palindrome (5525876785255).

The spelling of 2005453240253 in words is "two trillion, five billion, four hundred fifty-three million, two hundred forty thousand, two hundred fifty-three".