21550352043053 has 8 divisors (see below), whose sum is σ = 21658780291200. Its totient is φ = 21441925145520.

The previous prime is 21550352043047. The next prime is 21550352043113. The reversal of 21550352043053 is 35034025305512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21550352043053 - 2³⁴ = 21533172173869 is a prime.

It is a super-2 number, since 2×21550352043053² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21550352042998 and 21550352043016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21550352043553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52009451 + ... + 52422167.

It is an arithmetic number, because the mean of its divisors is an integer number (2707347536400).

Almost surely, 2^{21550352043053} is an apocalyptic number.

It is an amenable number.

21550352043053 is a deficient number, since it is larger than the sum of its proper divisors (108428248147).

21550352043053 is a wasteful number, since it uses less digits than its factorization.

21550352043053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675307.

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 21550352043053 its reverse (35034025305512), we get a palindrome (56584377348565).

The spelling of 21550352043053 in words is "twenty-one trillion, five hundred fifty billion, three hundred fifty-two million, forty-three thousand, fifty-three".