72221443015 has 8 divisors (see below), whose sum is σ = 86769033120. Its totient is φ = 57708286752.

The previous prime is 72221443013. The next prime is 72221443027. The reversal of 72221443015 is 51034412227.

It is a happy number.

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 72221443015 - 2¹ = 72221443013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72221443013) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 8603844 + ... + 8612233.

It is an arithmetic number, because the mean of its divisors is an integer number (10846129140).

Almost surely, 2^72221443015 is an apocalyptic number.

72221443015 is a deficient number, since it is larger than the sum of its proper divisors (14547590105).

72221443015 is a wasteful number, since it uses less digits than its factorization.

72221443015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17216921.

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 72221443015 in words is "seventy-two billion, two hundred twenty-one million, four hundred forty-three thousand, fifteen".