72323622473 has 2 divisors, whose sum is σ = 72323622474. Its totient is φ = 72323622472.

The previous prime is 72323622467. The next prime is 72323622533. The reversal of 72323622473 is 37422632327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52076609209 + 20247013264 = 228203^2 + 142292^2 .

It is a cyclic number.

It is not a de Polignac number, because 72323622473 - 2⁶ = 72323622409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72323622473.

It is not a weakly prime, because it can be changed into another prime (72323622443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161811236 + 36161811237.

It is an arithmetic number, because the mean of its divisors is an integer number (36161811237).

Almost surely, 2^72323622473 is an apocalyptic number.

It is an amenable number.

72323622473 is a deficient number, since it is larger than the sum of its proper divisors (1).

72323622473 is an equidigital number, since it uses as much as digits as its factorization.

72323622473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 41.

The spelling of 72323622473 in words is "seventy-two billion, three hundred twenty-three million, six hundred twenty-two thousand, four hundred seventy-three".