73665616105 has 16 divisors (see below), whose sum is σ = 90374130000. Its totient is φ = 57623158528.

The previous prime is 73665616103. The next prime is 73665616121. The reversal of 73665616105 is 50161656637.

It can be written as a sum of positive squares in 8 ways, for example, as 161188416 + 73504427689 = 12696^2 + 271117^2 .

It is a cyclic number.

It is not a de Polignac number, because 73665616105 - 2¹ = 73665616103 is a prime.

It is a super-2 number, since 2×73665616105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73665616103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396730 + ... + 552019.

It is an arithmetic number, because the mean of its divisors is an integer number (5648383125).

Almost surely, 2^73665616105 is an apocalyptic number.

It is an amenable number.

73665616105 is a deficient number, since it is larger than the sum of its proper divisors (16708513895).

73665616105 is a wasteful number, since it uses less digits than its factorization.

73665616105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949100.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 73665616105 in words is "seventy-three billion, six hundred sixty-five million, six hundred sixteen thousand, one hundred five".