12345788889 has 24 divisors (see below), whose sum is σ = 20764890432. Its totient is φ = 6921626400.

The previous prime is 12345788879. The next prime is 12345788891. The reversal of 12345788889 is 98888754321.

12345788889 is a `hidden beast` number, since 1 + 23 + 457 + 8 + 88 + 89 = 666.

It is not a de Polignac number, because 12345788889 - 2⁸ = 12345788633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12345788879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1845387 + ... + 1852064.

It is an arithmetic number, because the mean of its divisors is an integer number (865203768).

Almost surely, 2^12345788889 is an apocalyptic number.

It is an amenable number.

12345788889 is a deficient number, since it is larger than the sum of its proper divisors (8419101543).

12345788889 is a wasteful number, since it uses less digits than its factorization.

12345788889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697517 (or 3697514 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 12345788889 in words is "twelve billion, three hundred forty-five million, seven hundred eighty-eight thousand, eight hundred eighty-nine".