12004123077 has 16 divisors (see below), whose sum is σ = 17786036160. Its totient is φ = 8001781200.

The previous prime is 12004123073. The next prime is 12004123111. The reversal of 12004123077 is 77032140021.

It is a happy number.

It is not a de Polignac number, because 12004123077 - 2² = 12004123073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12004123077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004123073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253927 + ... + 297467.

It is an arithmetic number, because the mean of its divisors is an integer number (1111627260).

Almost surely, 2^12004123077 is an apocalyptic number.

It is an amenable number.

12004123077 is a deficient number, since it is larger than the sum of its proper divisors (5781913083).

12004123077 is a wasteful number, since it uses less digits than its factorization.

12004123077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53761 (or 53755 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 12004123077 its reverse (77032140021), we get a palindrome (89036263098).

The spelling of 12004123077 in words is "twelve billion, four million, one hundred twenty-three thousand, seventy-seven".