720720974153 has 2 divisors, whose sum is σ = 720720974154. Its totient is φ = 720720974152.

The previous prime is 720720974047. The next prime is 720720974159. The reversal of 720720974153 is 351479027027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500489747209 + 220231226944 = 707453^2 + 469288^2 .

It is an emirp because it is prime and its reverse (351479027027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720720974153 - 2²⁶ = 720653865289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720720974098 and 720720974107.

It is not a weakly prime, because it can be changed into another prime (720720974159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360360487076 + 360360487077.

It is an arithmetic number, because the mean of its divisors is an integer number (360360487077).

Almost surely, 2^720720974153 is an apocalyptic number.

It is an amenable number.

720720974153 is a deficient number, since it is larger than the sum of its proper divisors (1).

720720974153 is an equidigital number, since it uses as much as digits as its factorization.

720720974153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 720720974153 in words is "seven hundred twenty billion, seven hundred twenty million, nine hundred seventy-four thousand, one hundred fifty-three".