12557834043 has 4 divisors (see below), whose sum is σ = 16743778728. Its totient is φ = 8371889360.

The previous prime is 12557833997. The next prime is 12557834089. The reversal of 12557834043 is 34043875521.

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

It is an interprime number because it is at equal distance from previous prime (12557833997) and next prime (12557834089).

It is a cyclic number.

It is not a de Polignac number, because 12557834043 - 2⁹ = 12557833531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12557833986 and 12557834004.

It is not an unprimeable number, because it can be changed into a prime (12557834143) 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, 2092972338 + ... + 2092972343.

It is an arithmetic number, because the mean of its divisors is an integer number (4185944682).

Almost surely, 2^12557834043 is an apocalyptic number.

12557834043 is a deficient number, since it is larger than the sum of its proper divisors (4185944685).

12557834043 is an equidigital number, since it uses as much as digits as its factorization.

12557834043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185944684.

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

The spelling of 12557834043 in words is "twelve billion, five hundred fifty-seven million, eight hundred thirty-four thousand, forty-three".