72244682866 has 4 divisors (see below), whose sum is σ = 108367024302. Its totient is φ = 36122341432.

The previous prime is 72244682857. The next prime is 72244682947. The reversal of 72244682866 is 66828644227.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 50079726225 + 22164956641 = 223785^2 + 148879^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18061170715 + ... + 18061170718.

Almost surely, 2^72244682866 is an apocalyptic number.

72244682866 is a deficient number, since it is larger than the sum of its proper divisors (36122341436).

72244682866 is a wasteful number, since it uses less digits than its factorization.

72244682866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36122341435.

The product of its digits is 12386304, while the sum is 55.

The spelling of 72244682866 in words is "seventy-two billion, two hundred forty-four million, six hundred eighty-two thousand, eight hundred sixty-six".