12198510243 has 6 divisors (see below), whose sum is σ = 17620070364. Its totient is φ = 8132340156.

The previous prime is 12198510241. The next prime is 12198510287. The reversal of 12198510243 is 34201589121.

12198510243 is a `hidden beast` number, since 12 + 1 + 98 + 510 + 2 + 43 = 666.

It is not a de Polignac number, because 12198510243 - 2¹ = 12198510241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12198510198 and 12198510207.

It is not an unprimeable number, because it can be changed into a prime (12198510241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 677695005 + ... + 677695022.

It is an arithmetic number, because the mean of its divisors is an integer number (2936678394).

Almost surely, 2^12198510243 is an apocalyptic number.

12198510243 is a deficient number, since it is larger than the sum of its proper divisors (5421560121).

12198510243 is a wasteful number, since it uses less digits than its factorization.

12198510243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355390033 (or 1355390030 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 12198510243 in words is "twelve billion, one hundred ninety-eight million, five hundred ten thousand, two hundred forty-three".