720518870113 has 24 divisors (see below), whose sum is σ = 839458157928. Its totient is φ = 616627904256.

The previous prime is 720518870089. The next prime is 720518870161. The reversal of 720518870113 is 311078815027.

It can be written as a sum of positive squares in 4 ways, for example, as 264559008609 + 455959861504 = 514353^2 + 675248^2 .

It is not a de Polignac number, because 720518870113 - 2¹³ = 720518861921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720518870113.

It is not an unprimeable number, because it can be changed into a prime (720518870413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109949245 + ... + 109955797.

It is an arithmetic number, because the mean of its divisors is an integer number (34977423247).

Almost surely, 2^720518870113 is an apocalyptic number.

It is an amenable number.

720518870113 is a deficient number, since it is larger than the sum of its proper divisors (118939287815).

720518870113 is a wasteful number, since it uses less digits than its factorization.

720518870113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713 (or 9706 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 43.

The spelling of 720518870113 in words is "seven hundred twenty billion, five hundred eighteen million, eight hundred seventy thousand, one hundred thirteen".