72843041686 has 4 divisors (see below), whose sum is σ = 109264562532. Its totient is φ = 36421520842.

The previous prime is 72843041671. The next prime is 72843041699. The reversal of 72843041686 is 68614034827.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×72843041686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18210760420 + ... + 18210760423.

It is an arithmetic number, because the mean of its divisors is an integer number (27316140633).

Almost surely, 2^72843041686 is an apocalyptic number.

72843041686 is a deficient number, since it is larger than the sum of its proper divisors (36421520846).

72843041686 is a wasteful number, since it uses less digits than its factorization.

72843041686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36421520845.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 72843041686 in words is "seventy-two billion, eight hundred forty-three million, forty-one thousand, six hundred eighty-six".