12348322557 has 4 divisors (see below), whose sum is σ = 16464430080. Its totient is φ = 8232215036.

The previous prime is 12348322529. The next prime is 12348322561. The reversal of 12348322557 is 75522384321.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12348322557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12348322457) 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, 2058053757 + ... + 2058053762.

It is an arithmetic number, because the mean of its divisors is an integer number (4116107520).

Almost surely, 2^12348322557 is an apocalyptic number.

It is an amenable number.

12348322557 is a deficient number, since it is larger than the sum of its proper divisors (4116107523).

12348322557 is an equidigital number, since it uses as much as digits as its factorization.

12348322557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116107522.

The product of its digits is 403200, while the sum is 42.

The spelling of 12348322557 in words is "twelve billion, three hundred forty-eight million, three hundred twenty-two thousand, five hundred fifty-seven".