12453666344523 has 64 divisors (see below), whose sum is σ = 19178944128000. Its totient is φ = 7980242176512.

The previous prime is 12453666344489. The next prime is 12453666344549. The reversal of 12453666344523 is 32544366635421.

It is not a de Polignac number, because 12453666344523 - 2⁸ = 12453666344267 is a prime.

It is a super-2 number, since 2×12453666344523² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12453666344523.

It is not an unprimeable number, because it can be changed into a prime (12453666344573) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38212323 + ... + 38536851.

It is an arithmetic number, because the mean of its divisors is an integer number (299671002000).

Almost surely, 2^{12453666344523} is an apocalyptic number.

12453666344523 is a deficient number, since it is larger than the sum of its proper divisors (6725277783477).

12453666344523 is a wasteful number, since it uses less digits than its factorization.

12453666344523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325041 (or 325035 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 54.

The spelling of 12453666344523 in words is "twelve trillion, four hundred fifty-three billion, six hundred sixty-six million, three hundred forty-four thousand, five hundred twenty-three".