12581122347 has 12 divisors (see below), whose sum is σ = 18254227264. Its totient is φ = 8349801840.

The previous prime is 12581122313. The next prime is 12581122361. The reversal of 12581122347 is 74322118521.

12581122347 is a `hidden beast` number, since 1 + 2 + 581 + 12 + 23 + 47 = 666.

It is not a de Polignac number, because 12581122347 - 2⁶ = 12581122283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12581122747) 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, 3132304 + ... + 3136317.

Almost surely, 2^12581122347 is an apocalyptic number.

12581122347 is a deficient number, since it is larger than the sum of its proper divisors (5673104917).

12581122347 is a wasteful number, since it uses less digits than its factorization.

12581122347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268850 (or 6268847 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The spelling of 12581122347 in words is "twelve billion, five hundred eighty-one million, one hundred twenty-two thousand, three hundred forty-seven".