21533530041 has 24 divisors (see below), whose sum is σ = 31183014720. Its totient is φ = 14319266400.

The previous prime is 21533530013. The next prime is 21533530061. The reversal of 21533530041 is 14003533512.

21533530041 is a `hidden beast` number, since 21 + 5 + 335 + 300 + 4 + 1 = 666.

It is not a de Polignac number, because 21533530041 - 2¹⁴ = 21533513657 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21533529987 and 21533530014.

It is not an unprimeable number, because it can be changed into a prime (21533530061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9694311 + ... + 9696531.

It is an arithmetic number, because the mean of its divisors is an integer number (1299292280).

Almost surely, 2^21533530041 is an apocalyptic number.

It is an amenable number.

21533530041 is a deficient number, since it is larger than the sum of its proper divisors (9649484679).

21533530041 is a wasteful number, since it uses less digits than its factorization.

21533530041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477 (or 4474 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 21533530041 in words is "twenty-one billion, five hundred thirty-three million, five hundred thirty thousand, forty-one".