72919847685 has 64 divisors (see below), whose sum is σ = 124456220928. Its totient is φ = 36330799104.

The previous prime is 72919847677. The next prime is 72919847723. The reversal of 72919847685 is 58674891927.

It is not a de Polignac number, because 72919847685 - 2³ = 72919847677 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 25738029 + ... + 25740861.

It is an arithmetic number, because the mean of its divisors is an integer number (1944628452).

Almost surely, 2^72919847685 is an apocalyptic number.

It is an amenable number.

72919847685 is a deficient number, since it is larger than the sum of its proper divisors (51536373243).

72919847685 is a wasteful number, since it uses less digits than its factorization.

72919847685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574.

The product of its digits is 60963840, while the sum is 66.

The spelling of 72919847685 in words is "seventy-two billion, nine hundred nineteen million, eight hundred forty-seven thousand, six hundred eighty-five".