72369213321 has 8 divisors (see below), whose sum is σ = 97196608224. Its totient is φ = 47893980320.

The previous prime is 72369213317. The next prime is 72369213341. The reversal of 72369213321 is 12331296327.

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 72369213321 - 2² = 72369213317 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72369213321.

It is not an unprimeable number, because it can be changed into a prime (72369213341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 88039995 + ... + 88040816.

It is an arithmetic number, because the mean of its divisors is an integer number (12149576028).

Almost surely, 2^72369213321 is an apocalyptic number.

It is an amenable number.

72369213321 is a deficient number, since it is larger than the sum of its proper divisors (24827394903).

72369213321 is a wasteful number, since it uses less digits than its factorization.

72369213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176080951.

The product of its digits is 81648, while the sum is 39.

The spelling of 72369213321 in words is "seventy-two billion, three hundred sixty-nine million, two hundred thirteen thousand, three hundred twenty-one".