720420251041 has 2 divisors, whose sum is σ = 720420251042. Its totient is φ = 720420251040.

The previous prime is 720420251027. The next prime is 720420251071. The reversal of 720420251041 is 140152024027.

720420251041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441255961441 + 279164289600 = 664271^2 + 528360^2 .

It is a cyclic number.

It is not a de Polignac number, because 720420251041 - 2¹¹ = 720420248993 is a prime.

It is not a weakly prime, because it can be changed into another prime (720420251071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360210125520 + 360210125521.

It is an arithmetic number, because the mean of its divisors is an integer number (360210125521).

Almost surely, 2^720420251041 is an apocalyptic number.

It is an amenable number.

720420251041 is a deficient number, since it is larger than the sum of its proper divisors (1).

720420251041 is an equidigital number, since it uses as much as digits as its factorization.

720420251041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 720420251041 its reverse (140152024027), we get a palindrome (860572275068).

The spelling of 720420251041 in words is "seven hundred twenty billion, four hundred twenty million, two hundred fifty-one thousand, forty-one".