72449720333747 has 2 divisors, whose sum is σ = 72449720333748. Its totient is φ = 72449720333746.

The previous prime is 72449720333737. The next prime is 72449720333761. The reversal of 72449720333747 is 74733302794427.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72449720333747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72449720333747.

It is not a weakly prime, because it can be changed into another prime (72449720333737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36224860166873 + 36224860166874.

It is an arithmetic number, because the mean of its divisors is an integer number (36224860166874).

Almost surely, 2^{72449720333747} is an apocalyptic number.

72449720333747 is a deficient number, since it is larger than the sum of its proper divisors (1).

72449720333747 is an equidigital number, since it uses as much as digits as its factorization.

72449720333747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 149361408, while the sum is 62.

The spelling of 72449720333747 in words is "seventy-two trillion, four hundred forty-nine billion, seven hundred twenty million, three hundred thirty-three thousand, seven hundred forty-seven".