72228579365 has 4 divisors (see below), whose sum is σ = 86674295244. Its totient is φ = 57782863488.

The previous prime is 72228579361. The next prime is 72228579373. The reversal of 72228579365 is 56397582227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9456784516 + 62771794849 = 97246^2 + 250543^2 .

It is a cyclic number.

It is not a de Polignac number, because 72228579365 - 2² = 72228579361 is a prime.

It is a super-2 number, since 2×72228579365² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72228579365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72228579361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7222857932 + ... + 7222857941.

It is an arithmetic number, because the mean of its divisors is an integer number (21668573811).

Almost surely, 2^72228579365 is an apocalyptic number.

It is an amenable number.

72228579365 is a deficient number, since it is larger than the sum of its proper divisors (14445715879).

72228579365 is a wasteful number, since it uses less digits than its factorization.

72228579365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14445715878.

The product of its digits is 12700800, while the sum is 56.

The spelling of 72228579365 in words is "seventy-two billion, two hundred twenty-eight million, five hundred seventy-nine thousand, three hundred sixty-five".