72163047222 has 48 divisors (see below), whose sum is σ = 179587449600. Its totient is φ = 20514398256.

The previous prime is 72163047139. The next prime is 72163047263. The reversal of 72163047222 is 22274036127.

It is a happy number.

72163047222 is a `hidden beast` number, since 7 + 2 + 163 + 0 + 472 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1413928 + ... + 1464075.

It is an arithmetic number, because the mean of its divisors is an integer number (3741405200).

Almost surely, 2^72163047222 is an apocalyptic number.

72163047222 is an abundant number, since it is smaller than the sum of its proper divisors (107424402378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72163047222 is a wasteful number, since it uses less digits than its factorization.

72163047222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878217 (or 2878214 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 72163047222 in words is "seventy-two billion, one hundred sixty-three million, forty-seven thousand, two hundred twenty-two".