12198863637 has 12 divisors (see below), whose sum is σ = 17625227724. Its totient is φ = 8130431040.

The previous prime is 12198863623. The next prime is 12198863639. The reversal of 12198863637 is 73636889121.

12198863637 is a `hidden beast` number, since 12 + 198 + 86 + 363 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2515122801 + 9683740836 = 50151^2 + 98406^2 .

It is not a de Polignac number, because 12198863637 - 2⁸ = 12198863381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12198863639) 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 11 ways as a sum of consecutive naturals, for example, 142314 + ... + 211307.

It is an arithmetic number, because the mean of its divisors is an integer number (1468768977).

Almost surely, 2^12198863637 is an apocalyptic number.

It is an amenable number.

12198863637 is a deficient number, since it is larger than the sum of its proper divisors (5426364087).

12198863637 is a wasteful number, since it uses less digits than its factorization.

12198863637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357460 (or 357457 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 12198863637 in words is "twelve billion, one hundred ninety-eight million, eight hundred sixty-three thousand, six hundred thirty-seven".