72216741191 has 4 divisors (see below), whose sum is σ = 82533418512. Its totient is φ = 61900063872.

The previous prime is 72216741133. The next prime is 72216741193. The reversal of 72216741191 is 19114761227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72216741191 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 (72216741193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5158338650 + ... + 5158338663.

It is an arithmetic number, because the mean of its divisors is an integer number (20633354628).

Almost surely, 2^72216741191 is an apocalyptic number.

72216741191 is a deficient number, since it is larger than the sum of its proper divisors (10316677321).

72216741191 is a wasteful number, since it uses less digits than its factorization.

72216741191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316677320.

The product of its digits is 42336, while the sum is 41.

The spelling of 72216741191 in words is "seventy-two billion, two hundred sixteen million, seven hundred forty-one thousand, one hundred ninety-one".