12345680384 has 20 divisors (see below), whose sum is σ = 24667249134. Its totient is φ = 6172839936.

The previous prime is 12345680363. The next prime is 12345680387. The reversal of 12345680384 is 48308654321.

It can be written as a sum of positive squares in only one way, i.e., 10241440000 + 2104240384 = 101200^2 + 45872^2 .

It is not an unprimeable number, because it can be changed into a prime (12345680387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12055817 + ... + 12056840.

Almost surely, 2^12345680384 is an apocalyptic number.

It is an amenable number.

12345680384 is a deficient number, since it is larger than the sum of its proper divisors (12321568750).

12345680384 is an frugal number, since it uses more digits than its factorization.

12345680384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24112675 (or 24112659 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 12345680384 in words is "twelve billion, three hundred forty-five million, six hundred eighty thousand, three hundred eighty-four".