72809224307 has 2 divisors, whose sum is σ = 72809224308. Its totient is φ = 72809224306.

The previous prime is 72809224289. The next prime is 72809224337. The reversal of 72809224307 is 70342290827.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72809224307 - 2¹⁰ = 72809223283 is a prime.

It is not a weakly prime, because it can be changed into another prime (72809224337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36404612153 + 36404612154.

It is an arithmetic number, because the mean of its divisors is an integer number (36404612154).

Almost surely, 2^72809224307 is an apocalyptic number.

72809224307 is a deficient number, since it is larger than the sum of its proper divisors (1).

72809224307 is an equidigital number, since it uses as much as digits as its factorization.

72809224307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 72809224307 in words is "seventy-two billion, eight hundred nine million, two hundred twenty-four thousand, three hundred seven".