12315509206 has 128 divisors (see below), whose sum is σ = 27405858816. Its totient is φ = 3987118080.

The previous prime is 12315509201. The next prime is 12315509209. The reversal of 12315509206 is 60290551321.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315509201) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 774916 + ... + 790648.

It is an arithmetic number, because the mean of its divisors is an integer number (214108272).

Almost surely, 2^12315509206 is an apocalyptic number.

12315509206 is an abundant number, since it is smaller than the sum of its proper divisors (15090349610).

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

12315509206 is a wasteful number, since it uses less digits than its factorization.

12315509206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15806.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 12315509206 in words is "twelve billion, three hundred fifteen million, five hundred nine thousand, two hundred six".