9720936228865 has 8 divisors (see below), whose sum is σ = 12172302756288. Its totient is φ = 7438629462000.

The previous prime is 9720936228853. The next prime is 9720936228881. The reversal of 9720936228865 is 5688226390279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9720936228865 - 2⁵ = 9720936228833 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 9720936228865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42264940011 + ... + 42264940240.

It is an arithmetic number, because the mean of its divisors is an integer number (1521537844536).

Almost surely, 2^{9720936228865} is an apocalyptic number.

It is an amenable number.

9720936228865 is a deficient number, since it is larger than the sum of its proper divisors (2451366527423).

9720936228865 is a wasteful number, since it uses less digits than its factorization.

9720936228865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84529880279.

The product of its (nonzero) digits is 156764160, while the sum is 67.

The spelling of 9720936228865 in words is "nine trillion, seven hundred twenty billion, nine hundred thirty-six million, two hundred twenty-eight thousand, eight hundred sixty-five".