12453555437 has 2 divisors, whose sum is σ = 12453555438. Its totient is φ = 12453555436.

The previous prime is 12453555431. The next prime is 12453555461. The reversal of 12453555437 is 73455535421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9688268041 + 2765287396 = 98429^2 + 52586^2 .

It is an emirp because it is prime and its reverse (73455535421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12453555437 - 2¹⁴ = 12453539053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12453555431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6226777718 + 6226777719.

It is an arithmetic number, because the mean of its divisors is an integer number (6226777719).

Almost surely, 2^12453555437 is an apocalyptic number.

It is an amenable number.

12453555437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12453555437 is an equidigital number, since it uses as much as digits as its factorization.

12453555437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 44.

The spelling of 12453555437 in words is "twelve billion, four hundred fifty-three million, five hundred fifty-five thousand, four hundred thirty-seven".