12555571393 has 8 divisors (see below), whose sum is σ = 13236398720. Its totient is φ = 11876744880.

The previous prime is 12555571387. The next prime is 12555571397. The reversal of 12555571393 is 39317555521.

12555571393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12555571393 - 2¹³ = 12555563201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12555571397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487305 + ... + 512422.

It is an arithmetic number, because the mean of its divisors is an integer number (1654549840).

Almost surely, 2^12555571393 is an apocalyptic number.

It is an amenable number.

12555571393 is a deficient number, since it is larger than the sum of its proper divisors (680827327).

12555571393 is an equidigital number, since it uses as much as digits as its factorization.

12555571393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000407.

The product of its digits is 708750, while the sum is 46.

The spelling of 12555571393 in words is "twelve billion, five hundred fifty-five million, five hundred seventy-one thousand, three hundred ninety-three".