73321752217 has 8 divisors (see below), whose sum is σ = 85216564800. Its totient is φ = 61782008784.

The previous prime is 73321752209. The next prime is 73321752221. The reversal of 73321752217 is 71225712337.

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 73321752217 - 2³ = 73321752209 is a prime.

It is a super-2 number, since 2×73321752217² (a number of 23 digits) contains 22 as substring.

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 73321752217.

It is not an unprimeable number, because it can be changed into a prime (73321750217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88766842 + ... + 88767667.

It is an arithmetic number, because the mean of its divisors is an integer number (10652070600).

Almost surely, 2^73321752217 is an apocalyptic number.

It is an amenable number.

73321752217 is a deficient number, since it is larger than the sum of its proper divisors (11894812583).

73321752217 is a wasteful number, since it uses less digits than its factorization.

73321752217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177534575.

The product of its digits is 123480, while the sum is 40.

The spelling of 73321752217 in words is "seventy-three billion, three hundred twenty-one million, seven hundred fifty-two thousand, two hundred seventeen".