20228448644480 has 64 divisors (see below), whose sum is σ = 48369932427600. Its totient is φ = 8089489176576.

The previous prime is 20228448644461. The next prime is 20228448644527. The reversal of 20228448644480 is 8444684482202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948695 + ... + 6430934.

Almost surely, 2^{20228448644480} is an apocalyptic number.

20228448644480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20228448644480 is an abundant number, since it is smaller than the sum of its proper divisors (28141483783120).

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

20228448644480 is an equidigital number, since it uses as much as digits as its factorization.

20228448644480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383931 (or 7383919 counting only the distinct ones).

The product of its (nonzero) digits is 25165824, while the sum is 56.

The spelling of 20228448644480 in words is "twenty trillion, two hundred twenty-eight billion, four hundred forty-eight million, six hundred forty-four thousand, four hundred eighty".