12128465137 has 2 divisors, whose sum is σ = 12128465138. Its totient is φ = 12128465136.

The previous prime is 12128465123. The next prime is 12128465183. The reversal of 12128465137 is 73156482121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12122890816 + 5574321 = 110104^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 12128465137 - 2¹⁹ = 12127940849 is a prime.

It is a super-3 number, since 3×12128465137³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12128465137.

It is not a weakly prime, because it can be changed into another prime (12128405137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064232568 + 6064232569.

It is an arithmetic number, because the mean of its divisors is an integer number (6064232569).

Almost surely, 2^12128465137 is an apocalyptic number.

It is an amenable number.

12128465137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12128465137 is an equidigital number, since it uses as much as digits as its factorization.

12128465137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The spelling of 12128465137 in words is "twelve billion, one hundred twenty-eight million, four hundred sixty-five thousand, one hundred thirty-seven".