12243504105 has 64 divisors (see below), whose sum is σ = 24889835520. Its totient is φ = 5593848768.

The previous prime is 12243504101. The next prime is 12243504127. The reversal of 12243504105 is 50140534221.

12243504105 is a `hidden beast` number, since 1 + 2 + 243 + 5 + 0 + 410 + 5 = 666.

It is not a de Polignac number, because 12243504105 - 2² = 12243504101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12243504101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2741104 + ... + 2745566.

It is an arithmetic number, because the mean of its divisors is an integer number (388903680).

Almost surely, 2^12243504105 is an apocalyptic number.

12243504105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12243504105 is an abundant number, since it is smaller than the sum of its proper divisors (12646331415).

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

12243504105 is a wasteful number, since it uses less digits than its factorization.

12243504105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387 (or 7381 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 12243504105 in words is "twelve billion, two hundred forty-three million, five hundred four thousand, one hundred five".