21163836008833 has 16 divisors (see below), whose sum is σ = 24468356240640. Its totient is φ = 17930731136256.

The previous prime is 21163836008801. The next prime is 21163836008857. The reversal of 21163836008833 is 33880063836112.

It is a cyclic number.

It is not a de Polignac number, because 21163836008833 - 2⁵ = 21163836008801 is a prime.

It is a super-3 number, since 3×21163836008833³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21163836008633) 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, 47134173 + ... + 47581066.

It is an arithmetic number, because the mean of its divisors is an integer number (1529272265040).

Almost surely, 2^{21163836008833} is an apocalyptic number.

It is an amenable number.

21163836008833 is a deficient number, since it is larger than the sum of its proper divisors (3304520231807).

21163836008833 is a wasteful number, since it uses less digits than its factorization.

21163836008833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94715616.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 21163836008833 in words is "twenty-one trillion, one hundred sixty-three billion, eight hundred thirty-six million, eight thousand, eight hundred thirty-three".