12400432104 has 32 divisors (see below), whose sum is σ = 31011200640. Its totient is φ = 4132128000.

The previous prime is 12400432039. The next prime is 12400432133. The reversal of 12400432104 is 40123400421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7872 + ... + 157679.

It is an arithmetic number, because the mean of its divisors is an integer number (969100020).

Almost surely, 2^12400432104 is an apocalyptic number.

It is an amenable number.

12400432104 is an abundant number, since it is smaller than the sum of its proper divisors (18610768536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12400432104 is a wasteful number, since it uses less digits than its factorization.

12400432104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168681 (or 168677 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12400432104 its reverse (40123400421), we get a palindrome (52523832525).

The spelling of 12400432104 in words is "twelve billion, four hundred million, four hundred thirty-two thousand, one hundred four".