13311243203977 has 2 divisors, whose sum is σ = 13311243203978. Its totient is φ = 13311243203976.

The previous prime is 13311243203971. The next prime is 13311243204037. The reversal of 13311243203977 is 77930234211331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7761901868361 + 5549341335616 = 2786019^2 + 2355704^2 .

It is a cyclic number.

It is not a de Polignac number, because 13311243203977 - 2¹¹ = 13311243201929 is a prime.

It is not a weakly prime, because it can be changed into another prime (13311243203971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655621601988 + 6655621601989.

It is an arithmetic number, because the mean of its divisors is an integer number (6655621601989).

Almost surely, 2^{13311243203977} is an apocalyptic number.

It is an amenable number.

13311243203977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311243203977 is an equidigital number, since it uses as much as digits as its factorization.

13311243203977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 13311243203977 in words is "thirteen trillion, three hundred eleven billion, two hundred forty-three million, two hundred three thousand, nine hundred seventy-seven".