12345500109 has 16 divisors (see below), whose sum is σ = 17166840320. Its totient is φ = 7882721280.

The previous prime is 12345500099. The next prime is 12345500143. The reversal of 12345500109 is 90100554321.

It is not a de Polignac number, because 12345500109 - 2⁸ = 12345499853 is a prime.

It is a super-2 number, since 2×12345500109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345501109) 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, 675244 + ... + 693285.

It is an arithmetic number, because the mean of its divisors is an integer number (1072927520).

Almost surely, 2^12345500109 is an apocalyptic number.

It is an amenable number.

12345500109 is a deficient number, since it is larger than the sum of its proper divisors (4821340211).

12345500109 is a wasteful number, since it uses less digits than its factorization.

12345500109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368660.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 12345500109 in words is "twelve billion, three hundred forty-five million, five hundred thousand, one hundred nine".