72843041687 has 8 divisors (see below), whose sum is σ = 81857063904. Its totient is φ = 64316263968.

The previous prime is 72843041671. The next prime is 72843041699. The reversal of 72843041687 is 78614034827.

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 72843041687 - 2⁴ = 72843041671 is a prime.

It is a super-2 number, since 2×72843041687² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72843041627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121810808 + ... + 121811405.

It is an arithmetic number, because the mean of its divisors is an integer number (10232132988).

Almost surely, 2^72843041687 is an apocalyptic number.

72843041687 is a deficient number, since it is larger than the sum of its proper divisors (9014022217).

72843041687 is a wasteful number, since it uses less digits than its factorization.

72843041687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243622249.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 72843041687 in words is "seventy-two billion, eight hundred forty-three million, forty-one thousand, six hundred eighty-seven".