12428805578957 has 4 divisors (see below), whose sum is σ = 12969188430240. Its totient is φ = 11888422727676.

The previous prime is 12428805578953. The next prime is 12428805578963. The reversal of 12428805578957 is 75987550882421.

12428805578957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 12428805578957 - 2² = 12428805578953 is a prime.

It is a super-2 number, since 2×12428805578957² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12428805578953) 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, 270191425607 + ... + 270191425652.

It is an arithmetic number, because the mean of its divisors is an integer number (3242297107560).

Almost surely, 2^{12428805578957} is an apocalyptic number.

It is an amenable number.

12428805578957 is a deficient number, since it is larger than the sum of its proper divisors (540382851283).

12428805578957 is an equidigital number, since it uses as much as digits as its factorization.

12428805578957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540382851282.

The product of its (nonzero) digits is 451584000, while the sum is 71.

The spelling of 12428805578957 in words is "twelve trillion, four hundred twenty-eight billion, eight hundred five million, five hundred seventy-eight thousand, nine hundred fifty-seven".