72563565197 has 4 divisors (see below), whose sum is σ = 72571025760. Its totient is φ = 72556104636.

The previous prime is 72563565161. The next prime is 72563565211. The reversal of 72563565197 is 79156536527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72563565197 - 2¹⁰ = 72563564173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72563568197) 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, 3715673 + ... + 3735150.

It is an arithmetic number, because the mean of its divisors is an integer number (18142756440).

Almost surely, 2^72563565197 is an apocalyptic number.

It is an amenable number.

72563565197 is a deficient number, since it is larger than the sum of its proper divisors (7460563).

72563565197 is an equidigital number, since it uses as much as digits as its factorization.

72563565197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7460562.

The product of its digits is 11907000, while the sum is 56.

The spelling of 72563565197 in words is "seventy-two billion, five hundred sixty-three million, five hundred sixty-five thousand, one hundred ninety-seven".