72831186321 has 8 divisors (see below), whose sum is σ = 97135563264. Its totient is φ = 48540466800.

The previous prime is 72831186319. The next prime is 72831186341. The reversal of 72831186321 is 12368113827.

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

It is not a de Polignac number, because 72831186321 - 2¹ = 72831186319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72831186301) 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, 3401905 + ... + 3423246.

It is an arithmetic number, because the mean of its divisors is an integer number (12141945408).

Almost surely, 2^72831186321 is an apocalyptic number.

It is an amenable number.

72831186321 is a deficient number, since it is larger than the sum of its proper divisors (24304376943).

72831186321 is a wasteful number, since it uses less digits than its factorization.

72831186321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828711.

The product of its digits is 96768, while the sum is 42.

The spelling of 72831186321 in words is "seventy-two billion, eight hundred thirty-one million, one hundred eighty-six thousand, three hundred twenty-one".