21800736193 has 8 divisors (see below), whose sum is σ = 22362230016. Its totient is φ = 21240660000.

The previous prime is 21800736169. The next prime is 21800736239. The reversal of 21800736193 is 39163700812.

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 21800736193 - 2⁹ = 21800735681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21800736493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323221 + ... + 384802.

It is an arithmetic number, because the mean of its divisors is an integer number (2795278752).

Almost surely, 2^21800736193 is an apocalyptic number.

It is an amenable number.

21800736193 is a deficient number, since it is larger than the sum of its proper divisors (561493823).

21800736193 is an equidigital number, since it uses as much as digits as its factorization.

21800736193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708815.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 21800736193 in words is "twenty-one billion, eight hundred million, seven hundred thirty-six thousand, one hundred ninety-three".