12291769657848 has 16 divisors (see below), whose sum is σ = 30729424144680. Its totient is φ = 4097256552608.

The previous prime is 12291769657801. The next prime is 12291769657891. The reversal of 12291769657848 is 84875696719221.

It is a super-2 number, since 2×12291769657848² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12291769657848.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256078534515 + ... + 256078534562.

Almost surely, 2^{12291769657848} is an apocalyptic number.

It is an amenable number.

12291769657848 is an abundant number, since it is smaller than the sum of its proper divisors (18437654486832).

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

12291769657848 is a wasteful number, since it uses less digits than its factorization.

12291769657848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512157069086 (or 512157069082 counting only the distinct ones).

The product of its digits is 731566080, while the sum is 75.

The spelling of 12291769657848 in words is "twelve trillion, two hundred ninety-one billion, seven hundred sixty-nine million, six hundred fifty-seven thousand, eight hundred forty-eight".