72012680685 has 96 divisors (see below), whose sum is σ = 137687921280. Its totient is φ = 34527897600.

The previous prime is 72012680659. The next prime is 72012680693. The reversal of 72012680685 is 58608621027.

It is not a de Polignac number, because 72012680685 - 2⁷ = 72012680557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 72012680685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19054126 + ... + 19057904.

It is an arithmetic number, because the mean of its divisors is an integer number (1434249180).

Almost surely, 2^72012680685 is an apocalyptic number.

It is an amenable number.

72012680685 is a deficient number, since it is larger than the sum of its proper divisors (65675240595).

72012680685 is a wasteful number, since it uses less digits than its factorization.

72012680685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219 (or 4216 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 72012680685 in words is "seventy-two billion, twelve million, six hundred eighty thousand, six hundred eighty-five".