1165005661059 has 10 divisors (see below), whose sum is σ = 1740317098740. Its totient is φ = 776670440652.

The previous prime is 1165005661013. The next prime is 1165005661069. The reversal of 1165005661059 is 9501665005611.

1165005661059 is a `hidden beast` number, since 11 + 65 + 0 + 0 + 566 + 10 + 5 + 9 = 666.

It is not a de Polignac number, because 1165005661059 - 2¹² = 1165005656963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1165005661009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7191392889 + ... + 7191393050.

It is an arithmetic number, because the mean of its divisors is an integer number (174031709874).

Almost surely, 2^{1165005661059} is an apocalyptic number.

1165005661059 is a deficient number, since it is larger than the sum of its proper divisors (575311437681).

1165005661059 is an equidigital number, since it uses as much as digits as its factorization.

1165005661059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14382785951 (or 14382785942 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 1165005661059 in words is "one trillion, one hundred sixty-five billion, five million, six hundred sixty-one thousand, fifty-nine".