72449720333737 has 2 divisors, whose sum is σ = 72449720333738. Its totient is φ = 72449720333736.

The previous prime is 72449720333671. The next prime is 72449720333747. The reversal of 72449720333737 is 73733302794427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49629714266896 + 22820006066841 = 7044836^2 + 4777029^2 .

It is a cyclic number.

It is not a de Polignac number, because 72449720333737 - 2²⁷ = 72449586116009 is a prime.

It is not a weakly prime, because it can be changed into another prime (72449720333747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36224860166868 + 36224860166869.

It is an arithmetic number, because the mean of its divisors is an integer number (36224860166869).

Almost surely, 2^{72449720333737} is an apocalyptic number.

It is an amenable number.

72449720333737 is a deficient number, since it is larger than the sum of its proper divisors (1).

72449720333737 is an equidigital number, since it uses as much as digits as its factorization.

72449720333737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112021056, while the sum is 61.

The spelling of 72449720333737 in words is "seventy-two trillion, four hundred forty-nine billion, seven hundred twenty million, three hundred thirty-three thousand, seven hundred thirty-seven".