720216693728 has 36 divisors (see below), whose sum is σ = 1649424842352. Its totient is φ = 308664296640.

The previous prime is 720216693719. The next prime is 720216693733. The reversal of 720216693728 is 827396612027.

It is a self number, because there is not a number n which added to its sum of digits gives 720216693728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229659368 + ... + 229662503.

It is an arithmetic number, because the mean of its divisors is an integer number (45817356732).

Almost surely, 2^720216693728 is an apocalyptic number.

It is an amenable number.

720216693728 is an abundant number, since it is smaller than the sum of its proper divisors (929208148624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720216693728 is a wasteful number, since it uses less digits than its factorization.

720216693728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459321895 (or 459321880 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 720216693728 in words is "seven hundred twenty billion, two hundred sixteen million, six hundred ninety-three thousand, seven hundred twenty-eight".