20512404053 has 2 divisors, whose sum is σ = 20512404054. Its totient is φ = 20512404052.

The previous prime is 20512404041. The next prime is 20512404071. The reversal of 20512404053 is 35040421502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14228195524 + 6284208529 = 119282^2 + 79273^2 .

It is a cyclic number.

It is not a de Polignac number, because 20512404053 - 2⁸ = 20512403797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20512404083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256202026 + 10256202027.

It is an arithmetic number, because the mean of its divisors is an integer number (10256202027).

Almost surely, 2^20512404053 is an apocalyptic number.

It is an amenable number.

20512404053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512404053 is an equidigital number, since it uses as much as digits as its factorization.

20512404053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20512404053 its reverse (35040421502), we get a palindrome (55552825555).

It can be divided in two parts, 2051 and 2404053, that added together give a cube (2406104 = 134³).

The spelling of 20512404053 in words is "twenty billion, five hundred twelve million, four hundred four thousand, fifty-three".