72220720520519 has 2 divisors, whose sum is σ = 72220720520520. Its totient is φ = 72220720520518.

The previous prime is 72220720520369. The next prime is 72220720520527. The reversal of 72220720520519 is 91502502702227.

It is a strong prime.

It is an emirp because it is prime and its reverse (91502502702227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72220720520519 is a prime.

It is a super-2 number, since 2×72220720520519² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72220720520519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72220720520539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36110360260259 + 36110360260260.

It is an arithmetic number, because the mean of its divisors is an integer number (36110360260260).

Almost surely, 2^{72220720520519} is an apocalyptic number.

72220720520519 is a deficient number, since it is larger than the sum of its proper divisors (1).

72220720520519 is an equidigital number, since it uses as much as digits as its factorization.

72220720520519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 72220720520519 in words is "seventy-two trillion, two hundred twenty billion, seven hundred twenty million, five hundred twenty thousand, five hundred nineteen".