12145214453 has 2 divisors, whose sum is σ = 12145214454. Its totient is φ = 12145214452.

The previous prime is 12145214449. The next prime is 12145214531. The reversal of 12145214453 is 35441254121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11152838449 + 992376004 = 105607^2 + 31502^2 .

It is a cyclic number.

It is not a de Polignac number, because 12145214453 - 2² = 12145214449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12145214353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072607226 + 6072607227.

It is an arithmetic number, because the mean of its divisors is an integer number (6072607227).

Almost surely, 2^12145214453 is an apocalyptic number.

It is an amenable number.

12145214453 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145214453 is an equidigital number, since it uses as much as digits as its factorization.

12145214453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 32.

Adding to 12145214453 its reverse (35441254121), we get a palindrome (47586468574).

The spelling of 12145214453 in words is "twelve billion, one hundred forty-five million, two hundred fourteen thousand, four hundred fifty-three".