21303414134550 has 72 divisors (see below), whose sum is σ = 57243377443824. Its totient is φ = 5680096063680.

The previous prime is 21303414134539. The next prime is 21303414134591. The reversal of 21303414134550 is 5543141430312.

21303414134550 is a `hidden beast` number, since 2 + 1 + 3 + 0 + 34 + 1 + 41 + 34 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247377 + ... + 6532076.

It is an arithmetic number, because the mean of its divisors is an integer number (795046908942).

Almost surely, 2^{21303414134550} is an apocalyptic number.

21303414134550 is an abundant number, since it is smaller than the sum of its proper divisors (35939963309274).

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

21303414134550 is a wasteful number, since it uses less digits than its factorization.

21303414134550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786454 (or 6786446 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 21303414134550 its reverse (5543141430312), we get a palindrome (26846555564862).

The spelling of 21303414134550 in words is "twenty-one trillion, three hundred three billion, four hundred fourteen million, one hundred thirty-four thousand, five hundred fifty".