1168668732557 has 2 divisors, whose sum is σ = 1168668732558. Its totient is φ = 1168668732556.

The previous prime is 1168668732523. The next prime is 1168668732599. The reversal of 1168668732557 is 7552378668611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810052200841 + 358616531716 = 900029^2 + 598846^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168668732557 - 2²² = 1168664538253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1168668732493 and 1168668732502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1168668732457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584334366278 + 584334366279.

It is an arithmetic number, because the mean of its divisors is an integer number (584334366279).

Almost surely, 2^{1168668732557} is an apocalyptic number.

It is an amenable number.

1168668732557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168668732557 is an equidigital number, since it uses as much as digits as its factorization.

1168668732557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 65.

The spelling of 1168668732557 in words is "one trillion, one hundred sixty-eight billion, six hundred sixty-eight million, seven hundred thirty-two thousand, five hundred fifty-seven".