720223021559 has 2 divisors, whose sum is σ = 720223021560. Its totient is φ = 720223021558.

The previous prime is 720223021543. The next prime is 720223021621. The reversal of 720223021559 is 955120322027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720223021559 - 2⁴ = 720223021543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720223521559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360111510779 + 360111510780.

It is an arithmetic number, because the mean of its divisors is an integer number (360111510780).

Almost surely, 2^720223021559 is an apocalyptic number.

720223021559 is a deficient number, since it is larger than the sum of its proper divisors (1).

720223021559 is an equidigital number, since it uses as much as digits as its factorization.

720223021559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 720223021559 in words is "seven hundred twenty billion, two hundred twenty-three million, twenty-one thousand, five hundred fifty-nine".