72232866856 has 32 divisors (see below), whose sum is σ = 143611202880. Its totient is φ = 33942700800.

The previous prime is 72232866793. The next prime is 72232866857. The reversal of 72232866856 is 65866823227.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72232866797 and 72232866806.

It is not an unprimeable number, because it can be changed into a prime (72232866857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290340 + ... + 478291.

It is an arithmetic number, because the mean of its divisors is an integer number (4487850090).

Almost surely, 2^72232866856 is an apocalyptic number.

It is an amenable number.

72232866856 is a deficient number, since it is larger than the sum of its proper divisors (71378336024).

72232866856 is a wasteful number, since it uses less digits than its factorization.

72232866856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769345 (or 769341 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The spelling of 72232866856 in words is "seventy-two billion, two hundred thirty-two million, eight hundred sixty-six thousand, eight hundred fifty-six".