21466038933 has 16 divisors (see below), whose sum is σ = 32093300800. Its totient is φ = 14179399920.

The previous prime is 21466038889. The next prime is 21466038953. The reversal of 21466038933 is 33983066412.

21466038933 is a `hidden beast` number, since 2 + 1 + 4 + 6 + 603 + 8 + 9 + 33 = 666.

It is not a de Polignac number, because 21466038933 - 2²¹ = 21463941781 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 (21466038953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3644023 + ... + 3649908.

It is an arithmetic number, because the mean of its divisors is an integer number (2005831300).

Almost surely, 2^21466038933 is an apocalyptic number.

It is an amenable number.

21466038933 is a deficient number, since it is larger than the sum of its proper divisors (10627261867).

21466038933 is a wasteful number, since it uses less digits than its factorization.

21466038933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294049 (or 7294043 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 21466038933 in words is "twenty-one billion, four hundred sixty-six million, thirty-eight thousand, nine hundred thirty-three".