21333534061 has 8 divisors (see below), whose sum is σ = 24609044160. Its totient is φ = 18114989568.

The previous prime is 21333534043. The next prime is 21333534067. The reversal of 21333534061 is 16043533312.

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 21333534061 - 2¹⁹ = 21333009773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333534067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14240596 + ... + 14242093.

It is an arithmetic number, because the mean of its divisors is an integer number (3076130520).

Almost surely, 2^21333534061 is an apocalyptic number.

It is an amenable number.

21333534061 is a deficient number, since it is larger than the sum of its proper divisors (3275510099).

21333534061 is a wasteful number, since it uses less digits than its factorization.

21333534061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28482803.

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 21333534061 in words is "twenty-one billion, three hundred thirty-three million, five hundred thirty-four thousand, sixty-one".