72817617605 has 8 divisors (see below), whose sum is σ = 88487232000. Its totient is φ = 57516700176.

The previous prime is 72817617577. The next prime is 72817617619. The reversal of 72817617605 is 50671671827.

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 72817617605 - 2²⁴ = 72800840389 is a prime.

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, 92173805 + ... + 92174594.

It is an arithmetic number, because the mean of its divisors is an integer number (11060904000).

Almost surely, 2^72817617605 is an apocalyptic number.

It is an amenable number.

72817617605 is a deficient number, since it is larger than the sum of its proper divisors (15669614395).

72817617605 is a wasteful number, since it uses less digits than its factorization.

72817617605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184348483.

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 72817617605 in words is "seventy-two billion, eight hundred seventeen million, six hundred seventeen thousand, six hundred five".