50231719157729 has 2 divisors, whose sum is σ = 50231719157730. Its totient is φ = 50231719157728.

The previous prime is 50231719157699. The next prime is 50231719157821. The reversal of 50231719157729 is 92775191713205.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49848400915600 + 383318242129 = 7060340^2 + 619127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50231719157729 is a prime.

It is not a weakly prime, because it can be changed into another prime (50231719157129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25115859578864 + 25115859578865.

It is an arithmetic number, because the mean of its divisors is an integer number (25115859578865).

Almost surely, 2^{50231719157729} is an apocalyptic number.

It is an amenable number.

50231719157729 is a deficient number, since it is larger than the sum of its proper divisors (1).

50231719157729 is an equidigital number, since it uses as much as digits as its factorization.

50231719157729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8334900, while the sum is 59.

The spelling of 50231719157729 in words is "fifty trillion, two hundred thirty-one billion, seven hundred nineteen million, one hundred fifty-seven thousand, seven hundred twenty-nine".