72871843173 has 8 divisors (see below), whose sum is σ = 102276271200. Its totient is φ = 46024321968.

The previous prime is 72871843117. The next prime is 72871843183. The reversal of 72871843173 is 37134817827.

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

It is not a de Polignac number, because 72871843173 - 2²² = 72867648869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72871843103) 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, 639226638 + ... + 639226751.

It is an arithmetic number, because the mean of its divisors is an integer number (12784533900).

Almost surely, 2^72871843173 is an apocalyptic number.

It is an amenable number.

72871843173 is a deficient number, since it is larger than the sum of its proper divisors (29404428027).

72871843173 is a wasteful number, since it uses less digits than its factorization.

72871843173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278453411.

The product of its digits is 1580544, while the sum is 51.

The spelling of 72871843173 in words is "seventy-two billion, eight hundred seventy-one million, eight hundred forty-three thousand, one hundred seventy-three".