12540557453 has 8 divisors (see below), whose sum is σ = 12833703168. Its totient is φ = 12247480224.

The previous prime is 12540557431. The next prime is 12540557461. The reversal of 12540557453 is 35475504521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12540557453 - 2¹⁰ = 12540556429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12540557453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540557353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688601 + ... + 706577.

It is an arithmetic number, because the mean of its divisors is an integer number (1604212896).

Almost surely, 2^12540557453 is an apocalyptic number.

It is an amenable number.

12540557453 is a deficient number, since it is larger than the sum of its proper divisors (293145715).

12540557453 is a wasteful number, since it uses less digits than its factorization.

12540557453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34243.

The product of its (nonzero) digits is 420000, while the sum is 41.

The spelling of 12540557453 in words is "twelve billion, five hundred forty million, five hundred fifty-seven thousand, four hundred fifty-three".