12493702889 has 4 divisors (see below), whose sum is σ = 12924520260. Its totient is φ = 12062885520.

The previous prime is 12493702853. The next prime is 12493702891. The reversal of 12493702889 is 98820739421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98820739421 = 18427 ⋅5362823.

It can be written as a sum of positive squares in 2 ways, for example, as 3715512025 + 8778190864 = 60955^2 + 93692^2 .

It is a cyclic number.

It is not a de Polignac number, because 12493702889 - 2⁸ = 12493702633 is a prime.

It is a super-2 number, since 2×12493702889² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12493702889.

It is not an unprimeable number, because it can be changed into a prime (12493762889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215408642 + ... + 215408699.

It is an arithmetic number, because the mean of its divisors is an integer number (3231130065).

Almost surely, 2^12493702889 is an apocalyptic number.

It is an amenable number.

12493702889 is a deficient number, since it is larger than the sum of its proper divisors (430817371).

12493702889 is an equidigital number, since it uses as much as digits as its factorization.

12493702889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430817370.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 12493702889 in words is "twelve billion, four hundred ninety-three million, seven hundred two thousand, eight hundred eighty-nine".