73665576109 has 4 divisors (see below), whose sum is σ = 73688238720. Its totient is φ = 73642913500.

The previous prime is 73665576107. The next prime is 73665576163. The reversal of 73665576109 is 90167556637.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90167556637 = 223 ⋅404338819.

It is a cyclic number.

It is not a de Polignac number, because 73665576109 - 2¹ = 73665576107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73665576109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73665576107) 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, 11326429 + ... + 11332930.

It is an arithmetic number, because the mean of its divisors is an integer number (18422059680).

Almost surely, 2^73665576109 is an apocalyptic number.

It is an amenable number.

73665576109 is a deficient number, since it is larger than the sum of its proper divisors (22662611).

73665576109 is a wasteful number, since it uses less digits than its factorization.

73665576109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22662610.

The product of its (nonzero) digits is 7144200, while the sum is 55.

The spelling of 73665576109 in words is "seventy-three billion, six hundred sixty-five million, five hundred seventy-six thousand, one hundred nine".