12453115437 has 30 divisors (see below), whose sum is σ = 20984593422. Its totient is φ = 7116053616.

The previous prime is 12453115421. The next prime is 12453115447. The reversal of 12453115437 is 73451135421.

It can be written as a sum of positive squares in only one way, i.e., 11737338921 + 715776516 = 108339^2 + 26754^2 .

It is not a de Polignac number, because 12453115437 - 2⁴ = 12453115421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453115447) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 266538 + ... + 309755.

Almost surely, 2^12453115437 is an apocalyptic number.

It is an amenable number.

12453115437 is a deficient number, since it is larger than the sum of its proper divisors (8531477985).

12453115437 is an frugal number, since it uses more digits than its factorization.

12453115437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576327 (or 576303 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The spelling of 12453115437 in words is "twelve billion, four hundred fifty-three million, one hundred fifteen thousand, four hundred thirty-seven".