20503320225444 has 48 divisors (see below), whose sum is σ = 60750578448000. Its totient is φ = 5858091492768.

The previous prime is 20503320225403. The next prime is 20503320225497. The reversal of 20503320225444 is 44452202330502.

20503320225444 is a `hidden beast` number, since 2 + 0 + 5 + 0 + 3 + 3 + 202 + 2 + 5 + 444 = 666.

It is a super-2 number, since 2×20503320225444² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20503320225399 and 20503320225408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13560396219 + ... + 13560397730.

It is an arithmetic number, because the mean of its divisors is an integer number (1265637051000).

Almost surely, 2^{20503320225444} is an apocalyptic number.

It is an amenable number.

20503320225444 is an abundant number, since it is smaller than the sum of its proper divisors (40247258222556).

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

20503320225444 is a wasteful number, since it uses less digits than its factorization.

20503320225444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120793969 (or 27120793961 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 20503320225444 its reverse (44452202330502), we get a palindrome (64955522555946).

The spelling of 20503320225444 in words is "twenty trillion, five hundred three billion, three hundred twenty million, two hundred twenty-five thousand, four hundred forty-four".