1288380114991 has 2 divisors, whose sum is σ = 1288380114992. Its totient is φ = 1288380114990.

The previous prime is 1288380114977. The next prime is 1288380115007. The reversal of 1288380114991 is 1994110838821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288380114991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288380114961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644190057495 + 644190057496.

It is an arithmetic number, because the mean of its divisors is an integer number (644190057496).

Almost surely, 2^{1288380114991} is an apocalyptic number.

1288380114991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288380114991 is an equidigital number, since it uses as much as digits as its factorization.

1288380114991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 55.

The spelling of 1288380114991 in words is "one trillion, two hundred eighty-eight billion, three hundred eighty million, one hundred fourteen thousand, nine hundred ninety-one".