720121113163 has 2 divisors, whose sum is σ = 720121113164. Its totient is φ = 720121113162.

The previous prime is 720121113157. The next prime is 720121113221. The reversal of 720121113163 is 361311121027.

It is a weak prime.

It is an emirp because it is prime and its reverse (361311121027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720121113163 - 2⁹ = 720121112651 is a prime.

It is not a weakly prime, because it can be changed into another prime (720121111163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360060556581 + 360060556582.

It is an arithmetic number, because the mean of its divisors is an integer number (360060556582).

Almost surely, 2^720121113163 is an apocalyptic number.

720121113163 is a deficient number, since it is larger than the sum of its proper divisors (1).

720121113163 is an equidigital number, since it uses as much as digits as its factorization.

720121113163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The spelling of 720121113163 in words is "seven hundred twenty billion, one hundred twenty-one million, one hundred thirteen thousand, one hundred sixty-three".