12102447788 has 24 divisors (see below), whose sum is σ = 21561675408. Its totient is φ = 5942681856.

The previous prime is 12102447757. The next prime is 12102447817. The reversal of 12102447788 is 88774420121.

12102447788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12102447788² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 20906 + ... + 156977.

It is an arithmetic number, because the mean of its divisors is an integer number (898403142).

Almost surely, 2^12102447788 is an apocalyptic number.

It is an amenable number.

12102447788 is a deficient number, since it is larger than the sum of its proper divisors (9459227620).

12102447788 is a wasteful number, since it uses less digits than its factorization.

12102447788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178193 (or 178191 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 12102447788 in words is "twelve billion, one hundred two million, four hundred forty-seven thousand, seven hundred eighty-eight".