72343229621 has 16 divisors (see below), whose sum is σ = 78045643200. Its totient is φ = 66660599808.

The previous prime is 72343229603. The next prime is 72343229633. The reversal of 72343229621 is 12692234327.

It is a cyclic number.

It is not a de Polignac number, because 72343229621 - 2¹⁴ = 72343213237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72343229671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26723150 + ... + 26725856.

It is an arithmetic number, because the mean of its divisors is an integer number (4877852700).

Almost surely, 2^72343229621 is an apocalyptic number.

It is an amenable number.

72343229621 is a deficient number, since it is larger than the sum of its proper divisors (5702413579).

72343229621 is a wasteful number, since it uses less digits than its factorization.

72343229621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5588.

The product of its digits is 217728, while the sum is 41.

The spelling of 72343229621 in words is "seventy-two billion, three hundred forty-three million, two hundred twenty-nine thousand, six hundred twenty-one".