1168771128913 has 2 divisors, whose sum is σ = 1168771128914. Its totient is φ = 1168771128912.

The previous prime is 1168771128827. The next prime is 1168771128919. The reversal of 1168771128913 is 3198211778611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861614645824 + 307156483089 = 928232^2 + 554217^2 .

It is an emirp because it is prime and its reverse (3198211778611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168771128913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1168771128919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584385564456 + 584385564457.

It is an arithmetic number, because the mean of its divisors is an integer number (584385564457).

Almost surely, 2^{1168771128913} is an apocalyptic number.

It is an amenable number.

1168771128913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168771128913 is an equidigital number, since it uses as much as digits as its factorization.

1168771128913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 55.

The spelling of 1168771128913 in words is "one trillion, one hundred sixty-eight billion, seven hundred seventy-one million, one hundred twenty-eight thousand, nine hundred thirteen".