1617170085539 has 4 divisors (see below), whose sum is σ = 1617186443040. Its totient is φ = 1617153728040.

The previous prime is 1617170085491. The next prime is 1617170085593. The reversal of 1617170085539 is 9355800717161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1617170085539 is a prime.

It is a super-3 number, since 3×1617170085539³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617170045539) 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, 8029547 + ... + 8228484.

It is an arithmetic number, because the mean of its divisors is an integer number (404296610760).

Almost surely, 2^{1617170085539} is an apocalyptic number.

1617170085539 is a deficient number, since it is larger than the sum of its proper divisors (16357501).

1617170085539 is an equidigital number, since it uses as much as digits as its factorization.

1617170085539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16357500.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The spelling of 1617170085539 in words is "one trillion, six hundred seventeen billion, one hundred seventy million, eighty-five thousand, five hundred thirty-nine".