720351265397 has 2 divisors, whose sum is σ = 720351265398. Its totient is φ = 720351265396.

The previous prime is 720351265363. The next prime is 720351265423. The reversal of 720351265397 is 793562153027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701856897361 + 18494368036 = 837769^2 + 135994^2 .

It is a cyclic number.

It is not a de Polignac number, because 720351265397 - 2²⁸ = 720082829941 is a prime.

It is a super-6 number, since 6×720351265397⁶ (a number of 72 digits) contains 666666 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720351265097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360175632698 + 360175632699.

It is an arithmetic number, because the mean of its divisors is an integer number (360175632699).

Almost surely, 2^720351265397 is an apocalyptic number.

It is an amenable number.

720351265397 is a deficient number, since it is larger than the sum of its proper divisors (1).

720351265397 is an equidigital number, since it uses as much as digits as its factorization.

720351265397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The spelling of 720351265397 in words is "seven hundred twenty billion, three hundred fifty-one million, two hundred sixty-five thousand, three hundred ninety-seven".