1165170917057 has 4 divisors (see below), whose sum is σ = 1331623905216. Its totient is φ = 998717928900.

The previous prime is 1165170916993. The next prime is 1165170917059. The reversal of 1165170917057 is 7507190715611.

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 1165170917057 - 2⁶ = 1165170916993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1165170916996 and 1165170917014.

It is not an unprimeable number, because it can be changed into a prime (1165170917059) 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, 83226494069 + ... + 83226494082.

It is an arithmetic number, because the mean of its divisors is an integer number (332905976304).

Almost surely, 2^{1165170917057} is an apocalyptic number.

It is an amenable number.

1165170917057 is a deficient number, since it is larger than the sum of its proper divisors (166452988159).

1165170917057 is an equidigital number, since it uses as much as digits as its factorization.

1165170917057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166452988158.

The product of its (nonzero) digits is 463050, while the sum is 50.

The spelling of 1165170917057 in words is "one trillion, one hundred sixty-five billion, one hundred seventy million, nine hundred seventeen thousand, fifty-seven".