11720722265 has 16 divisors (see below), whose sum is σ = 16592655360. Its totient is φ = 7777805760.

The previous prime is 11720722241. The next prime is 11720722271. The reversal of 11720722265 is 56222702711.

11720722265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11720722265 - 2¹⁰ = 11720721241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5400170 + ... + 5402339.

It is an arithmetic number, because the mean of its divisors is an integer number (1037040960).

Almost surely, 2^11720722265 is an apocalyptic number.

It is an amenable number.

11720722265 is a deficient number, since it is larger than the sum of its proper divisors (4871933095).

11720722265 is a wasteful number, since it uses less digits than its factorization.

11720722265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10802552.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 11720722265 in words is "eleven billion, seven hundred twenty million, seven hundred twenty-two thousand, two hundred sixty-five".