21933321826 has 8 divisors (see below), whose sum is σ = 35430750684. Its totient is φ = 10123071600.

The previous prime is 21933321757. The next prime is 21933321827. The reversal of 21933321826 is 62812333912.

It can be written as a sum of positive squares in 2 ways, for example, as 21633997225 + 299324601 = 147085^2 + 17301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21933321827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421794625 + ... + 421794676.

Almost surely, 2^21933321826 is an apocalyptic number.

21933321826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21933321826 is a deficient number, since it is larger than the sum of its proper divisors (13497428858).

21933321826 is a wasteful number, since it uses less digits than its factorization.

21933321826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843589316.

The product of its digits is 93312, while the sum is 40.

The spelling of 21933321826 in words is "twenty-one billion, nine hundred thirty-three million, three hundred twenty-one thousand, eight hundred twenty-six".