12435400253 has 2 divisors, whose sum is σ = 12435400254. Its totient is φ = 12435400252.

The previous prime is 12435400249. The next prime is 12435400267. The reversal of 12435400253 is 35200453421.

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., 11841357124 + 594043129 = 108818^2 + 24373^2 .

It is a cyclic number.

It is not a de Polignac number, because 12435400253 - 2² = 12435400249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12435460253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217700126 + 6217700127.

It is an arithmetic number, because the mean of its divisors is an integer number (6217700127).

Almost surely, 2^12435400253 is an apocalyptic number.

It is an amenable number.

12435400253 is a deficient number, since it is larger than the sum of its proper divisors (1).

12435400253 is an equidigital number, since it uses as much as digits as its factorization.

12435400253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 12435400253 its reverse (35200453421), we get a palindrome (47635853674).

The spelling of 12435400253 in words is "twelve billion, four hundred thirty-five million, four hundred thousand, two hundred fifty-three".