72213065705 has 8 divisors (see below), whose sum is σ = 94533467904. Its totient is φ = 52518593200.

The previous prime is 72213065657. The next prime is 72213065713. The reversal of 72213065705 is 50756031227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72213065705 - 2⁶ = 72213065641 is a prime.

It is a Duffinian 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, 656482361 + ... + 656482470.

It is an arithmetic number, because the mean of its divisors is an integer number (11816683488).

Almost surely, 2^72213065705 is an apocalyptic number.

It is an amenable number.

72213065705 is a deficient number, since it is larger than the sum of its proper divisors (22320402199).

72213065705 is a wasteful number, since it uses less digits than its factorization.

72213065705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312964847.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 72213065705 in words is "seventy-two billion, two hundred thirteen million, sixty-five thousand, seven hundred five".