72220711016 has 8 divisors (see below), whose sum is σ = 135413833170. Its totient is φ = 36110355504.

The previous prime is 72220710983. The next prime is 72220711019. The reversal of 72220711016 is 61011702227.

It can be written as a sum of positive squares in only one way, i.e., 37851258916 + 34369452100 = 194554^2 + 185390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 72220711016.

It is not an unprimeable number, because it can be changed into a prime (72220711019) 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 as a sum of consecutive naturals, namely, 4513794431 + ... + 4513794446.

Almost surely, 2^72220711016 is an apocalyptic number.

It is an amenable number.

72220711016 is a deficient number, since it is larger than the sum of its proper divisors (63193122154).

72220711016 is a wasteful number, since it uses less digits than its factorization.

72220711016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027588883 (or 9027588879 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The spelling of 72220711016 in words is "seventy-two billion, two hundred twenty million, seven hundred eleven thousand, sixteen".