1311641396677 has 2 divisors, whose sum is σ = 1311641396678. Its totient is φ = 1311641396676.

The previous prime is 1311641396467. The next prime is 1311641396711. The reversal of 1311641396677 is 7766931461131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098316576036 + 213324820641 = 1048006^2 + 461871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311641396677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311641316677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655820698338 + 655820698339.

It is an arithmetic number, because the mean of its divisors is an integer number (655820698339).

Almost surely, 2^{1311641396677} is an apocalyptic number.

It is an amenable number.

1311641396677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311641396677 is an equidigital number, since it uses as much as digits as its factorization.

1311641396677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The spelling of 1311641396677 in words is "one trillion, three hundred eleven billion, six hundred forty-one million, three hundred ninety-six thousand, six hundred seventy-seven".