1168448578771 has 2 divisors, whose sum is σ = 1168448578772. Its totient is φ = 1168448578770.

The previous prime is 1168448578663. The next prime is 1168448578811. The reversal of 1168448578771 is 1778758448611.

It is a strong prime.

It is an emirp because it is prime and its reverse (1778758448611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1168448578771 - 2¹³ = 1168448570579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1168448578697 and 1168448578706.

It is not a weakly prime, because it can be changed into another prime (1168488578771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584224289385 + 584224289386.

It is an arithmetic number, because the mean of its divisors is an integer number (584224289386).

Almost surely, 2^{1168448578771} is an apocalyptic number.

1168448578771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168448578771 is an equidigital number, since it uses as much as digits as its factorization.

1168448578771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84295680, while the sum is 67.

Subtracting from 1168448578771 its sum of digits (67), we obtain a square (1168448578704 = 1080948²).

The spelling of 1168448578771 in words is "one trillion, one hundred sixty-eight billion, four hundred forty-eight million, five hundred seventy-eight thousand, seven hundred seventy-one".