72323943227 has 2 divisors, whose sum is σ = 72323943228. Its totient is φ = 72323943226.

The previous prime is 72323943191. The next prime is 72323943317. The reversal of 72323943227 is 72234932327.

It is a weak prime.

It is an emirp because it is prime and its reverse (72234932327) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72323943227 is a prime.

It is not a weakly prime, because it can be changed into another prime (72323943827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161971613 + 36161971614.

It is an arithmetic number, because the mean of its divisors is an integer number (36161971614).

Almost surely, 2^72323943227 is an apocalyptic number.

72323943227 is a deficient number, since it is larger than the sum of its proper divisors (1).

72323943227 is an equidigital number, since it uses as much as digits as its factorization.

72323943227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 44.

The spelling of 72323943227 in words is "seventy-two billion, three hundred twenty-three million, nine hundred forty-three thousand, two hundred twenty-seven".