72730776247999 has 2 divisors, whose sum is σ = 72730776248000. Its totient is φ = 72730776247998.

The previous prime is 72730776247901. The next prime is 72730776248071. The reversal of 72730776247999 is 99974267703727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72730776247999 - 2¹¹ = 72730776245951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72730776227999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36365388123999 + 36365388124000.

It is an arithmetic number, because the mean of its divisors is an integer number (36365388124000).

Almost surely, 2^{72730776247999} is an apocalyptic number.

72730776247999 is a deficient number, since it is larger than the sum of its proper divisors (1).

72730776247999 is an equidigital number, since it uses as much as digits as its factorization.

72730776247999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528663264, while the sum is 79.

The spelling of 72730776247999 in words is "seventy-two trillion, seven hundred thirty billion, seven hundred seventy-six million, two hundred forty-seven thousand, nine hundred ninety-nine".