20224163649872 has 40 divisors (see below), whose sum is σ = 48226851783936. Its totient is φ = 8000768036736.

The previous prime is 20224163649827. The next prime is 20224163649883. The reversal of 20224163649872 is 27894636142202.

It is a Harshad number since it is a multiple of its sum of digits (56).

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 in 7 ways as a sum of consecutive naturals, for example, 6945109688 + ... + 6945112599.

Almost surely, 2^{20224163649872} is an apocalyptic number.

It is an amenable number.

20224163649872 is an abundant number, since it is smaller than the sum of its proper divisors (28002688134064).

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

20224163649872 is a wasteful number, since it uses less digits than its factorization.

20224163649872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890222315 (or 13890222309 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 20224163649872 in words is "twenty trillion, two hundred twenty-four billion, one hundred sixty-three million, six hundred forty-nine thousand, eight hundred seventy-two".