1271206661113 has 8 divisors (see below), whose sum is σ = 1326515075136. Its totient is φ = 1215901460400.

The previous prime is 1271206661111. The next prime is 1271206661143. The reversal of 1271206661113 is 3111666021721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1271206661113 - 2¹ = 1271206661111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1271206661111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23203 + ... + 1594663.

It is an arithmetic number, because the mean of its divisors is an integer number (165814384392).

Almost surely, 2^{1271206661113} is an apocalyptic number.

It is an amenable number.

1271206661113 is a deficient number, since it is larger than the sum of its proper divisors (55308414023).

1271206661113 is a wasteful number, since it uses less digits than its factorization.

1271206661113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606655.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 1271206661113 in words is "one trillion, two hundred seventy-one billion, two hundred six million, six hundred sixty-one thousand, one hundred thirteen".