72147733211 has 4 divisors (see below), whose sum is σ = 72148371912. Its totient is φ = 72147094512.

The previous prime is 72147733171. The next prime is 72147733271. The reversal of 72147733211 is 11233774127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 72147733211 - 2¹⁴ = 72147716827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72147733271) 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, 99425 + ... + 392658.

It is an arithmetic number, because the mean of its divisors is an integer number (18037092978).

Almost surely, 2^72147733211 is an apocalyptic number.

72147733211 is a deficient number, since it is larger than the sum of its proper divisors (638701).

72147733211 is a wasteful number, since it uses less digits than its factorization.

72147733211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638700.

The product of its digits is 49392, while the sum is 38.

The spelling of 72147733211 in words is "seventy-two billion, one hundred forty-seven million, seven hundred thirty-three thousand, two hundred eleven".