720518870115 has 24 divisors (see below), whose sum is σ = 1362435682608. Its totient is φ = 349342482240.

The previous prime is 720518870089. The next prime is 720518870161. The reversal of 720518870115 is 511078815027.

It is not a de Polignac number, because 720518870115 - 2⁵ = 720518870083 is a prime.

It is a super-2 number, since 2×720518870115² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 727796344 + ... + 727797333.

It is an arithmetic number, because the mean of its divisors is an integer number (56768153442).

Almost surely, 2^720518870115 is an apocalyptic number.

720518870115 is a deficient number, since it is larger than the sum of its proper divisors (641916812493).

720518870115 is a wasteful number, since it uses less digits than its factorization.

720518870115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455593699 (or 1455593696 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 45.

The spelling of 720518870115 in words is "seven hundred twenty billion, five hundred eighteen million, eight hundred seventy thousand, one hundred fifteen".