21066364638083 has 8 divisors (see below), whose sum is σ = 21135576214896. Its totient is φ = 20997266061600.

The previous prime is 21066364638049. The next prime is 21066364638091. The reversal of 21066364638083 is 38083646366012.

It is a happy number.

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 21066364638083 - 2²⁰ = 21066363589507 is a prime.

It is a super-3 number, since 3×21066364638083³ (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 (21066364631083) 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, 27876608 + ... + 28622333.

It is an arithmetic number, because the mean of its divisors is an integer number (2641947026862).

Almost surely, 2^{21066364638083} is an apocalyptic number.

21066364638083 is a deficient number, since it is larger than the sum of its proper divisors (69211576813).

21066364638083 is an equidigital number, since it uses as much as digits as its factorization.

21066364638083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56500165.

The product of its (nonzero) digits is 17915904, while the sum is 56.

The spelling of 21066364638083 in words is "twenty-one trillion, sixty-six billion, three hundred sixty-four million, six hundred thirty-eight thousand, eighty-three".