20104154003550 has 48 divisors (see below), whose sum is σ = 49866433723440. Its totient is φ = 5360233347840.

The previous prime is 20104154003513. The next prime is 20104154003599. The reversal of 20104154003550 is 5530045140102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 10006815 + ... + 11846714.

It is an arithmetic number, because the mean of its divisors is an integer number (1038884035905).

Almost surely, 2^{20104154003550} is an apocalyptic number.

20104154003550 is an abundant number, since it is smaller than the sum of its proper divisors (29762279719890).

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

20104154003550 is a wasteful number, since it uses less digits than its factorization.

20104154003550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21859677 (or 21859672 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 20104154003550 its reverse (5530045140102), we get a palindrome (25634199143652).

The spelling of 20104154003550 in words is "twenty trillion, one hundred four billion, one hundred fifty-four million, three thousand, five hundred fifty".