1166857307797 has 4 divisors (see below), whose sum is σ = 1168248080160. Its totient is φ = 1165466535436.

The previous prime is 1166857307789. The next prime is 1166857307879. The reversal of 1166857307797 is 7977037586611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1166857307797 - 2³ = 1166857307789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166857307767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695384923 + ... + 695386600.

It is an arithmetic number, because the mean of its divisors is an integer number (292062020040).

Almost surely, 2^{1166857307797} is an apocalyptic number.

It is an amenable number.

1166857307797 is a deficient number, since it is larger than the sum of its proper divisors (1390772363).

1166857307797 is an equidigital number, since it uses as much as digits as its factorization.

1166857307797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390772362.

The product of its (nonzero) digits is 93350880, while the sum is 67.

The spelling of 1166857307797 in words is "one trillion, one hundred sixty-six billion, eight hundred fifty-seven million, three hundred seven thousand, seven hundred ninety-seven".