72204745117 has 16 divisors (see below), whose sum is σ = 77789099520. Its totient is φ = 66799479600.

The previous prime is 72204745073. The next prime is 72204745127. The reversal of 72204745117 is 71154740227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72204745117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72204745117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204745127) 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 in 15 ways as a sum of consecutive naturals, for example, 7651392 + ... + 7660822.

It is an arithmetic number, because the mean of its divisors is an integer number (4861818720).

Almost surely, 2^72204745117 is an apocalyptic number.

It is an amenable number.

72204745117 is a deficient number, since it is larger than the sum of its proper divisors (5584354403).

72204745117 is a wasteful number, since it uses less digits than its factorization.

72204745117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18864.

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 72204745117 in words is "seventy-two billion, two hundred four million, seven hundred forty-five thousand, one hundred seventeen".