12128428497 has 8 divisors (see below), whose sum is σ = 16184530656. Its totient is φ = 8078972672.

The previous prime is 12128428457. The next prime is 12128428547. The reversal of 12128428497 is 79482482121.

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 12128428497 - 2¹¹ = 12128426449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12128428457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657323 + ... + 1664624.

It is an arithmetic number, because the mean of its divisors is an integer number (2023066332).

Almost surely, 2^12128428497 is an apocalyptic number.

It is an amenable number.

12128428497 is a deficient number, since it is larger than the sum of its proper divisors (4056102159).

12128428497 is a wasteful number, since it uses less digits than its factorization.

12128428497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323167.

The product of its digits is 516096, while the sum is 48.

The spelling of 12128428497 in words is "twelve billion, one hundred twenty-eight million, four hundred twenty-eight thousand, four hundred ninety-seven".