72217673399 has 2 divisors, whose sum is σ = 72217673400. Its totient is φ = 72217673398.

The previous prime is 72217673321. The next prime is 72217673447. The reversal of 72217673399 is 99337671227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72217673399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72217672399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36108836699 + 36108836700.

It is an arithmetic number, because the mean of its divisors is an integer number (36108836700).

Almost surely, 2^72217673399 is an apocalyptic number.

72217673399 is a deficient number, since it is larger than the sum of its proper divisors (1).

72217673399 is an equidigital number, since it uses as much as digits as its factorization.

72217673399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 56.

The spelling of 72217673399 in words is "seventy-two billion, two hundred seventeen million, six hundred seventy-three thousand, three hundred ninety-nine".