21738826088 has 48 divisors (see below), whose sum is σ = 47435810400. Its totient is φ = 9312559200.

The previous prime is 21738826049. The next prime is 21738826091. The reversal of 21738826088 is 88062883712.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 989123 + ... + 1010861.

It is an arithmetic number, because the mean of its divisors is an integer number (988246050).

Almost surely, 2^21738826088 is an apocalyptic number.

21738826088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21738826088 is an abundant number, since it is smaller than the sum of its proper divisors (25696984312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21738826088 is a wasteful number, since it uses less digits than its factorization.

21738826088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24310 (or 24299 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 21738826088 in words is "twenty-one billion, seven hundred thirty-eight million, eight hundred twenty-six thousand, eighty-eight".