1165001005001 has 2 divisors, whose sum is σ = 1165001005002. Its totient is φ = 1165001005000.

The previous prime is 1165001004971. The next prime is 1165001005039. The reversal of 1165001005001 is 1005001005611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990126492601 + 174874512400 = 995051^2 + 418180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165001005001 - 2¹⁴ = 1165000988617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1165001005061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582500502500 + 582500502501.

It is an arithmetic number, because the mean of its divisors is an integer number (582500502501).

Almost surely, 2^{1165001005001} is an apocalyptic number.

It is an amenable number.

1165001005001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165001005001 is an equidigital number, since it uses as much as digits as its factorization.

1165001005001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 20.

The spelling of 1165001005001 in words is "one trillion, one hundred sixty-five billion, one million, five thousand, one".