12434453257 has 2 divisors, whose sum is σ = 12434453258. Its totient is φ = 12434453256.

The previous prime is 12434453231. The next prime is 12434453263. The reversal of 12434453257 is 75235443421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7509782281 + 4924670976 = 86659^2 + 70176^2 .

It is an emirp because it is prime and its reverse (75235443421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12434453257 - 2¹⁵ = 12434420489 is a prime.

It is not a weakly prime, because it can be changed into another prime (12434453357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217226628 + 6217226629.

It is an arithmetic number, because the mean of its divisors is an integer number (6217226629).

Almost surely, 2^12434453257 is an apocalyptic number.

It is an amenable number.

12434453257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434453257 is an equidigital number, since it uses as much as digits as its factorization.

12434453257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 40.

Adding to 12434453257 its reverse (75235443421), we get a palindrome (87669896678).

The spelling of 12434453257 in words is "twelve billion, four hundred thirty-four million, four hundred fifty-three thousand, two hundred fifty-seven".