20204315253 has 12 divisors (see below), whose sum is σ = 29305109548. Its totient is φ = 13413651840.

The previous prime is 20204315251. The next prime is 20204315269. The reversal of 20204315253 is 35251340202.

It is a happy number.

20204315253 is a `hidden beast` number, since 202 + 0 + 431 + 5 + 25 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9393098724 + 10811216529 = 96918^2 + 103977^2 .

It is not a de Polignac number, because 20204315253 - 2¹ = 20204315251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204315251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4655350 + ... + 4659687.

Almost surely, 2^20204315253 is an apocalyptic number.

It is an amenable number.

20204315253 is a deficient number, since it is larger than the sum of its proper divisors (9100794295).

20204315253 is a wasteful number, since it uses less digits than its factorization.

20204315253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315284 (or 9315281 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20204315253 its reverse (35251340202), we get a palindrome (55455655455).

The spelling of 20204315253 in words is "twenty billion, two hundred four million, three hundred fifteen thousand, two hundred fifty-three".