72730776248071 has 2 divisors, whose sum is σ = 72730776248072. Its totient is φ = 72730776248070.

The previous prime is 72730776247999. The next prime is 72730776248101. The reversal of 72730776248071 is 17084267703727.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72730776248071 - 2⁹ = 72730776247559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72730776246071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36365388124035 + 36365388124036.

It is an arithmetic number, because the mean of its divisors is an integer number (36365388124036).

Almost surely, 2^{72730776248071} is an apocalyptic number.

72730776248071 is a deficient number, since it is larger than the sum of its proper divisors (1).

72730776248071 is an equidigital number, since it uses as much as digits as its factorization.

72730776248071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38723328, while the sum is 61.

The spelling of 72730776248071 in words is "seventy-two trillion, seven hundred thirty billion, seven hundred seventy-six million, two hundred forty-eight thousand, seventy-one".