16626712788 has 144 divisors (see below), whose sum is σ = 50609534976. Its totient is φ = 4499668800.

The previous prime is 16626712787. The next prime is 16626712807. The reversal of 16626712788 is 88721762661.

16626712788 is a `hidden beast` number, since 1 + 6 + 626 + 7 + 1 + 2 + 7 + 8 + 8 = 666.

16626712788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16626712787) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 583063 + ... + 610913.

It is an arithmetic number, because the mean of its divisors is an integer number (351455104).

Almost surely, 2^16626712788 is an apocalyptic number.

16626712788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16626712788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25304767488).

16626712788 is an abundant number, since it is smaller than the sum of its proper divisors (33982822188).

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

16626712788 is a wasteful number, since it uses less digits than its factorization.

16626712788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27994 (or 27989 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 16626712788 in words is "sixteen billion, six hundred twenty-six million, seven hundred twelve thousand, seven hundred eighty-eight".