8161675354865 has 8 divisors (see below), whose sum is σ = 9794026305000. Its totient is φ = 6529329697792.

The previous prime is 8161675354849. The next prime is 8161675354927. The reversal of 8161675354865 is 5684535761618.

It can be written as a sum of positive squares in 4 ways, for example, as 3631742038369 + 4529933316496 = 1905713^2 + 2128364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8161675354865 - 2⁴ = 8161675354849 is a prime.

It is a super-2 number, since 2×8161675354865² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4059857 + ... + 5727633.

It is an arithmetic number, because the mean of its divisors is an integer number (1224253288125).

Almost surely, 2^{8161675354865} is an apocalyptic number.

It is an amenable number.

8161675354865 is a deficient number, since it is larger than the sum of its proper divisors (1632350950135).

8161675354865 is a wasteful number, since it uses less digits than its factorization.

8161675354865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646531.

The product of its digits is 145152000, while the sum is 65.

The spelling of 8161675354865 in words is "eight trillion, one hundred sixty-one billion, six hundred seventy-five million, three hundred fifty-four thousand, eight hundred sixty-five".