72847072222 has 4 divisors (see below), whose sum is σ = 109270608336. Its totient is φ = 36423536110.

The previous prime is 72847072211. The next prime is 72847072271. The reversal of 72847072222 is 22227074827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22227074827 = 197 ⋅112827791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18211768054 + ... + 18211768057.

It is an arithmetic number, because the mean of its divisors is an integer number (27317652084).

Almost surely, 2^72847072222 is an apocalyptic number.

72847072222 is a deficient number, since it is larger than the sum of its proper divisors (36423536114).

72847072222 is a wasteful number, since it uses less digits than its factorization.

72847072222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36423536113.

The product of its (nonzero) digits is 351232, while the sum is 43.

The spelling of 72847072222 in words is "seventy-two billion, eight hundred forty-seven million, seventy-two thousand, two hundred twenty-two".