72324505867 has 2 divisors, whose sum is σ = 72324505868. Its totient is φ = 72324505866.

The previous prime is 72324505861. The next prime is 72324505931. The reversal of 72324505867 is 76850542327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72324505867 - 2¹⁹ = 72323981579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72324505867.

It is not a weakly prime, because it can be changed into another prime (72324505861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36162252933 + 36162252934.

It is an arithmetic number, because the mean of its divisors is an integer number (36162252934).

Almost surely, 2^72324505867 is an apocalyptic number.

72324505867 is a deficient number, since it is larger than the sum of its proper divisors (1).

72324505867 is an equidigital number, since it uses as much as digits as its factorization.

72324505867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 72324505867 in words is "seventy-two billion, three hundred twenty-four million, five hundred five thousand, eight hundred sixty-seven".