12361344821442 has 12 divisors (see below), whose sum is σ = 26782913779830. Its totient is φ = 4120448273808.

The previous prime is 12361344821431. The next prime is 12361344821557. The reversal of 12361344821442 is 24412844316321.

12361344821442 is a `hidden beast` number, since 1 + 2 + 3 + 61 + 3 + 448 + 2 + 144 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11297725941681 + 1063618879761 = 3361209^2 + 1031319^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 343370689467 + ... + 343370689502.

Almost surely, 2^{12361344821442} is an apocalyptic number.

12361344821442 is an abundant number, since it is smaller than the sum of its proper divisors (14421568958388).

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

12361344821442 is a wasteful number, since it uses less digits than its factorization.

12361344821442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686741378977 (or 686741378974 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The spelling of 12361344821442 in words is "twelve trillion, three hundred sixty-one billion, three hundred forty-four million, eight hundred twenty-one thousand, four hundred forty-two".