12179474428 has 24 divisors (see below), whose sum is σ = 23306989104. Its totient is φ = 5522966400.

The previous prime is 12179474399. The next prime is 12179474443. The reversal of 12179474428 is 82447497121.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310225 + ... + 347272.

It is an arithmetic number, because the mean of its divisors is an integer number (971124546).

Almost surely, 2^12179474428 is an apocalyptic number.

It is an amenable number.

12179474428 is a deficient number, since it is larger than the sum of its proper divisors (11127514676).

12179474428 is a wasteful number, since it uses less digits than its factorization.

12179474428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657933 (or 657931 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The spelling of 12179474428 in words is "twelve billion, one hundred seventy-nine million, four hundred seventy-four thousand, four hundred twenty-eight".