22721986148 has 12 divisors (see below), whose sum is σ = 39811914492. Its totient is φ = 11347153440.

The previous prime is 22721986073. The next prime is 22721986151. The reversal of 22721986148 is 84168912722.

It can be written as a sum of positive squares in 2 ways, for example, as 4245564964 + 18476421184 = 65158^2 + 135928^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22721986096 and 22721986105.

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 in 3 ways as a sum of consecutive naturals, for example, 3456215 + ... + 3462782.

It is an arithmetic number, because the mean of its divisors is an integer number (3317659541).

Almost surely, 2^22721986148 is an apocalyptic number.

It is an amenable number.

22721986148 is a deficient number, since it is larger than the sum of its proper divisors (17089928344).

22721986148 is a wasteful number, since it uses less digits than its factorization.

22721986148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919822 (or 6919820 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 22721986148 in words is "twenty-two billion, seven hundred twenty-one million, nine hundred eighty-six thousand, one hundred forty-eight".