1701611601665 has 4 divisors (see below), whose sum is σ = 2041933922004. Its totient is φ = 1361289281328.

The previous prime is 1701611601623. The next prime is 1701611601757. The reversal of 1701611601665 is 5661061161071.

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 468809981809 + 1232801619856 = 684697^2 + 1110316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1701611601665 - 2¹⁰ = 1701611600641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170161160162 + ... + 170161160171.

It is an arithmetic number, because the mean of its divisors is an integer number (510483480501).

Almost surely, 2^{1701611601665} is an apocalyptic number.

It is an amenable number.

1701611601665 is a deficient number, since it is larger than the sum of its proper divisors (340322320339).

1701611601665 is an equidigital number, since it uses as much as digits as its factorization.

1701611601665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340322320338.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 1701611601665 in words is "one trillion, seven hundred one billion, six hundred eleven million, six hundred one thousand, six hundred sixty-five".