12788556858 has 160 divisors (see below), whose sum is σ = 35882288640. Its totient is φ = 3320915760.

The previous prime is 12788556829. The next prime is 12788556871. The reversal of 12788556858 is 85865588721.

12788556858 is a `hidden beast` number, since 1 + 2 + 78 + 8 + 556 + 8 + 5 + 8 = 666.

12788556858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12788556795 and 12788556804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3029073 + ... + 3033291.

It is an arithmetic number, because the mean of its divisors is an integer number (224264304).

Almost surely, 2^12788556858 is an apocalyptic number.

12788556858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12788556858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17941144320).

12788556858 is an abundant number, since it is smaller than the sum of its proper divisors (23093731782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12788556858 is an frugal number, since it uses more digits than its factorization.

12788556858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266 (or 4242 counting only the distinct ones).

The product of its digits is 43008000, while the sum is 63.

The spelling of 12788556858 in words is "twelve billion, seven hundred eighty-eight million, five hundred fifty-six thousand, eight hundred fifty-eight".