12458354689 has 27 divisors (see below), whose sum is σ = 13984655139. Its totient is φ = 11090265120.

The previous prime is 12458354659. The next prime is 12458354729. The reversal of 12458354689 is 98645385421.

The square root of 12458354689 is 111617.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7071969025 + 5386385664 = 84095^2 + 73392^2 .

It is not a de Polignac number, because 12458354689 - 2⁷ = 12458354561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12458354659) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 89628382 + ... + 89628520.

Almost surely, 2^12458354689 is an apocalyptic number.

12458354689 is the 111617-th square number.

12458354689 is the 55809-th centered octagonal number.

It is an amenable number.

12458354689 is a deficient number, since it is larger than the sum of its proper divisors (1526300450).

12458354689 is an frugal number, since it uses more digits than its factorization.

12458354689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 223 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 55.

The spelling of 12458354689 in words is "twelve billion, four hundred fifty-eight million, three hundred fifty-four thousand, six hundred eighty-nine".