12004002345 has 64 divisors (see below), whose sum is σ = 20900146176. Its totient is φ = 5859409920.

The previous prime is 12004002253. The next prime is 12004002407. The reversal of 12004002345 is 54320040021.

It is not a de Polignac number, because 12004002345 - 2¹¹ = 12004000297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3521632 + ... + 3525038.

It is an arithmetic number, because the mean of its divisors is an integer number (326564784).

Almost surely, 2^12004002345 is an apocalyptic number.

12004002345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12004002345 is a deficient number, since it is larger than the sum of its proper divisors (8896143831).

12004002345 is a wasteful number, since it uses less digits than its factorization.

12004002345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 12004002345 its reverse (54320040021), we get a palindrome (66324042366).

The spelling of 12004002345 in words is "twelve billion, four million, two thousand, three hundred forty-five".