1613165912065 has 16 divisors (see below), whose sum is σ = 1942337916288. Its totient is φ = 1286177491456.

The previous prime is 1613165912063. The next prime is 1613165912087. The reversal of 1613165912065 is 5602195613161.

It is a cyclic number.

It is not a de Polignac number, because 1613165912065 - 2¹ = 1613165912063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613165912063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3012534 + ... + 3507376.

It is an arithmetic number, because the mean of its divisors is an integer number (121396119768).

Almost surely, 2^{1613165912065} is an apocalyptic number.

It is an amenable number.

1613165912065 is a deficient number, since it is larger than the sum of its proper divisors (329172004223).

1613165912065 is a wasteful number, since it uses less digits than its factorization.

1613165912065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497048.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 1613165912065 in words is "one trillion, six hundred thirteen billion, one hundred sixty-five million, nine hundred twelve thousand, sixty-five".