12742820431636 has 24 divisors (see below), whose sum is σ = 22444644728576. Its totient is φ = 6330074456160.

The previous prime is 12742820431591. The next prime is 12742820431657. The reversal of 12742820431636 is 63613402824721.

It is a self number, because there is not a number n which added to its sum of digits gives 12742820431636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4091305 + ... + 6498031.

Almost surely, 2^{12742820431636} is an apocalyptic number.

It is an amenable number.

12742820431636 is a deficient number, since it is larger than the sum of its proper divisors (9701824296940).

12742820431636 is a wasteful number, since it uses less digits than its factorization.

12742820431636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415319 (or 2415317 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 12742820431636 in words is "twelve trillion, seven hundred forty-two billion, eight hundred twenty million, four hundred thirty-one thousand, six hundred thirty-six".