12345771253 has 2 divisors, whose sum is σ = 12345771254. Its totient is φ = 12345771252.

The previous prime is 12345771239. The next prime is 12345771287. The reversal of 12345771253 is 35217754321.

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., 12303690084 + 42081169 = 110922^2 + 6487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12345771253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12345771853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172885626 + 6172885627.

It is an arithmetic number, because the mean of its divisors is an integer number (6172885627).

Almost surely, 2^12345771253 is an apocalyptic number.

It is an amenable number.

12345771253 is a deficient number, since it is larger than the sum of its proper divisors (1).

12345771253 is an equidigital number, since it uses as much as digits as its factorization.

12345771253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The spelling of 12345771253 in words is "twelve billion, three hundred forty-five million, seven hundred seventy-one thousand, two hundred fifty-three".