12453858557 has 4 divisors (see below), whose sum is σ = 14232981216. Its totient is φ = 10674735900.

The previous prime is 12453858523. The next prime is 12453858569. The reversal of 12453858557 is 75585835421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75585835421 = 17 ⋅4446225613.

It is a cyclic number.

It is not a de Polignac number, because 12453858557 - 2¹⁶ = 12453793021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12453858499 and 12453858508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453858757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889561319 + ... + 889561332.

It is an arithmetic number, because the mean of its divisors is an integer number (3558245304).

Almost surely, 2^12453858557 is an apocalyptic number.

It is an amenable number.

12453858557 is a deficient number, since it is larger than the sum of its proper divisors (1779122659).

12453858557 is an equidigital number, since it uses as much as digits as its factorization.

12453858557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779122658.

The product of its digits is 6720000, while the sum is 53.

The spelling of 12453858557 in words is "twelve billion, four hundred fifty-three million, eight hundred fifty-eight thousand, five hundred fifty-seven".