12555313523 has 4 divisors (see below), whose sum is σ = 12570833880. Its totient is φ = 12539793168.

The previous prime is 12555313429. The next prime is 12555313559. The reversal of 12555313523 is 32531355521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12555313523 - 2¹² = 12555309427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12555319523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7758965 + ... + 7760582.

It is an arithmetic number, because the mean of its divisors is an integer number (3142708470).

Almost surely, 2^12555313523 is an apocalyptic number.

12555313523 is a deficient number, since it is larger than the sum of its proper divisors (15520357).

12555313523 is an equidigital number, since it uses as much as digits as its factorization.

12555313523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15520356.

The product of its digits is 67500, while the sum is 35.

The spelling of 12555313523 in words is "twelve billion, five hundred fifty-five million, three hundred thirteen thousand, five hundred twenty-three".