20503400002240 has 56 divisors (see below), whose sum is σ = 48824760252240. Its totient is φ = 8201185471488.

The previous prime is 20503400002219. The next prime is 20503400002277. The reversal of 20503400002240 is 4220000430502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14937171 + ... + 16251949.

It is an arithmetic number, because the mean of its divisors is an integer number (871870718790).

Almost surely, 2^{20503400002240} is an apocalyptic number.

20503400002240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20503400002240 is an abundant number, since it is smaller than the sum of its proper divisors (28321360250000).

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

20503400002240 is a wasteful number, since it uses less digits than its factorization.

20503400002240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363529 (or 1363519 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 20503400002240 its reverse (4220000430502), we get a palindrome (24723400432742).

The spelling of 20503400002240 in words is "twenty trillion, five hundred three billion, four hundred million, two thousand, two hundred forty".