1065606115601 has 4 divisors (see below), whose sum is σ = 1102351154100. Its totient is φ = 1028861077104.

The previous prime is 1065606115597. The next prime is 1065606115687. The reversal of 1065606115601 is 1065116065601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 878981251600 + 186624864001 = 937540^2 + 432001^2 .

It is not a de Polignac number, because 1065606115601 - 2² = 1065606115597 is a prime.

It is a super-2 number, since 2×1065606115601² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065606117601) 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, 18372519206 + ... + 18372519263.

It is an arithmetic number, because the mean of its divisors is an integer number (275587788525).

Almost surely, 2^{1065606115601} is an apocalyptic number.

It is an amenable number.

1065606115601 is a deficient number, since it is larger than the sum of its proper divisors (36745038499).

1065606115601 is an equidigital number, since it uses as much as digits as its factorization.

1065606115601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36745038498.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1065606115601 in words is "one trillion, sixty-five billion, six hundred six million, one hundred fifteen thousand, six hundred one".