20103584808540 has 48 divisors (see below), whose sum is σ = 56449499385888. Its totient is φ = 5345769099264.

The previous prime is 20103584808533. The next prime is 20103584808547. The reversal of 20103584808540 is 4580848530102.

It is an interprime number because it is at equal distance from previous prime (20103584808533) and next prime (20103584808547).

It is a self number, because there is not a number n which added to its sum of digits gives 20103584808540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103584808547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474567697 + ... + 474610056.

It is an arithmetic number, because the mean of its divisors is an integer number (1176031237206).

Almost surely, 2^{20103584808540} is an apocalyptic number.

20103584808540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103584808540 is an abundant number, since it is smaller than the sum of its proper divisors (36345914577348).

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

20103584808540 is a wasteful number, since it uses less digits than its factorization.

20103584808540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949178118 (or 949178116 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 20103584808540 in words is "twenty trillion, one hundred three billion, five hundred eighty-four million, eight hundred eight thousand, five hundred forty".