73171201165 has 8 divisors (see below), whose sum is σ = 88147098360. Its totient is φ = 58309189632.

The previous prime is 73171201139. The next prime is 73171201189. The reversal of 73171201165 is 56110217137.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23924046276 + 49247154889 = 154674^2 + 221917^2 .

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 73171201165 - 2⁹ = 73171200653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73171201165.

It is a congruent number.

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, 28470000 + ... + 28472569.

It is an arithmetic number, because the mean of its divisors is an integer number (11018387295).

Almost surely, 2^73171201165 is an apocalyptic number.

It is an amenable number.

73171201165 is a deficient number, since it is larger than the sum of its proper divisors (14975897195).

73171201165 is a wasteful number, since it uses less digits than its factorization.

73171201165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56942831.

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 73171201165 in words is "seventy-three billion, one hundred seventy-one million, two hundred one thousand, one hundred sixty-five".