12557775143 has 4 divisors (see below), whose sum is σ = 12558012048. Its totient is φ = 12557538240.

The previous prime is 12557775137. The next prime is 12557775239. The reversal of 12557775143 is 34157775521.

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 12557775143 - 2¹² = 12557771047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557775443) 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, 1655 + ... + 158487.

It is an arithmetic number, because the mean of its divisors is an integer number (3139503012).

Almost surely, 2^12557775143 is an apocalyptic number.

12557775143 is a deficient number, since it is larger than the sum of its proper divisors (236905).

12557775143 is an equidigital number, since it uses as much as digits as its factorization.

12557775143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236904.

The product of its digits is 1029000, while the sum is 47.

The spelling of 12557775143 in words is "twelve billion, five hundred fifty-seven million, seven hundred seventy-five thousand, one hundred forty-three".