21826590099 has 8 divisors (see below), whose sum is σ = 29102895552. Its totient is φ = 14550672360.

The previous prime is 21826590091. The next prime is 21826590167. The reversal of 21826590099 is 99009562812.

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

It is not a de Polignac number, because 21826590099 - 2³ = 21826590091 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21826590091) 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 7 ways as a sum of consecutive naturals, for example, 81192 + ... + 224154.

It is an arithmetic number, because the mean of its divisors is an integer number (3637861944).

Almost surely, 2^21826590099 is an apocalyptic number.

21826590099 is a deficient number, since it is larger than the sum of its proper divisors (7276305453).

21826590099 is a wasteful number, since it uses less digits than its factorization.

21826590099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193857.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 21826590099 in words is "twenty-one billion, eight hundred twenty-six million, five hundred ninety thousand, ninety-nine".