12100863842548 has 24 divisors (see below), whose sum is σ = 22832209857128. Its totient is φ = 5578466564736.

The previous prime is 12100863842519. The next prime is 12100863842549. The reversal of 12100863842548 is 84524836800121.

It can be written as a sum of positive squares in 4 ways, for example, as 1921777783524 + 10179086059024 = 1386282^2 + 3190468^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 12100863842495 and 12100863842504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100863842549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136361811 + ... + 136450522.

Almost surely, 2^{12100863842548} is an apocalyptic number.

It is an amenable number.

12100863842548 is a deficient number, since it is larger than the sum of its proper divisors (10731346014580).

12100863842548 is a wasteful number, since it uses less digits than its factorization.

12100863842548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272813203 (or 272813201 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 12100863842548 in words is "twelve trillion, one hundred billion, eight hundred sixty-three million, eight hundred forty-two thousand, five hundred forty-eight".