72173310169 has 8 divisors (see below), whose sum is σ = 72742393152. Its totient is φ = 71604502320.

The previous prime is 72173310089. The next prime is 72173310217. The reversal of 72173310169 is 96101337127.

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 72173310169 - 2³³ = 63583375577 is a prime.

It is a super-2 number, since 2×72173310169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72173311169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474772 + ... + 608074.

It is an arithmetic number, because the mean of its divisors is an integer number (9092799144).

Almost surely, 2^72173310169 is an apocalyptic number.

It is an amenable number.

72173310169 is a deficient number, since it is larger than the sum of its proper divisors (569082983).

72173310169 is a wasteful number, since it uses less digits than its factorization.

72173310169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137567.

The product of its (nonzero) digits is 47628, while the sum is 40.

The spelling of 72173310169 in words is "seventy-two billion, one hundred seventy-three million, three hundred ten thousand, one hundred sixty-nine".