12361655443212 has 18 divisors (see below), whose sum is σ = 31247517925988. Its totient is φ = 4120551814392.

The previous prime is 12361655443147. The next prime is 12361655443223. The reversal of 12361655443212 is 21234455616321.

12361655443212 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 1 + 65 + 544 + 32 + 12 = 666.

12361655443212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 171689658898 + ... + 171689658969.

Almost surely, 2^{12361655443212} is an apocalyptic number.

12361655443212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12361655443212 is an abundant number, since it is smaller than the sum of its proper divisors (18885862482776).

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

12361655443212 is a wasteful number, since it uses less digits than its factorization.

12361655443212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343379317877 (or 343379317872 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 12361655443212 in words is "twelve trillion, three hundred sixty-one billion, six hundred fifty-five million, four hundred forty-three thousand, two hundred twelve".