12177740828 has 24 divisors (see below), whose sum is σ = 23334862320. Its totient is φ = 5514753920.

The previous prime is 12177740807. The next prime is 12177740857. The reversal of 12177740828 is 82804777121.

It is a happy number.

12177740828 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 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, 502601 + ... + 526272.

It is an arithmetic number, because the mean of its divisors is an integer number (972285930).

Almost surely, 2^12177740828 is an apocalyptic number.

It is an amenable number.

12177740828 is a deficient number, since it is larger than the sum of its proper divisors (11157121492).

12177740828 is a wasteful number, since it uses less digits than its factorization.

12177740828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029157 (or 1029155 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 47.

The spelling of 12177740828 in words is "twelve billion, one hundred seventy-seven million, seven hundred forty thousand, eight hundred twenty-eight".