12787439571126 has 48 divisors (see below), whose sum is σ = 30226043135808. Its totient is φ = 3874829641200.

The previous prime is 12787439571097. The next prime is 12787439571139. The reversal of 12787439571126 is 62117593478721.

12787439571126 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 7 + 4 + 39 + 571 + 1 + 26 = 666.

It is a super-2 number, since 2×12787439571126² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3843721 + ... + 6352091.

It is an arithmetic number, because the mean of its divisors is an integer number (629709231996).

Almost surely, 2^{12787439571126} is an apocalyptic number.

12787439571126 is an abundant number, since it is smaller than the sum of its proper divisors (17438603564682).

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

12787439571126 is a wasteful number, since it uses less digits than its factorization.

12787439571126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534137 (or 2534134 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 12787439571126 in words is "twelve trillion, seven hundred eighty-seven billion, four hundred thirty-nine million, five hundred seventy-one thousand, one hundred twenty-six".