12355556789 has 16 divisors (see below), whose sum is σ = 12924334080. Its totient is φ = 11801936640.

The previous prime is 12355556743. The next prime is 12355556791. The reversal of 12355556789 is 98765555321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12355556789 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12355556989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462797 + ... + 488765.

It is an arithmetic number, because the mean of its divisors is an integer number (807770880).

Almost surely, 2^12355556789 is an apocalyptic number.

It is an amenable number.

12355556789 is a deficient number, since it is larger than the sum of its proper divisors (568777291).

12355556789 is a wasteful number, since it uses less digits than its factorization.

12355556789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26260.

The product of its digits is 11340000, while the sum is 56.

The spelling of 12355556789 in words is "twelve billion, three hundred fifty-five million, five hundred fifty-six thousand, seven hundred eighty-nine".