21823526680 has 16 divisors (see below), whose sum is σ = 49102935120. Its totient is φ = 8729410656.

The previous prime is 21823526663. The next prime is 21823526729. The reversal of 21823526680 is 8662532812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272794044 + ... + 272794123.

It is an arithmetic number, because the mean of its divisors is an integer number (3068933445).

Almost surely, 2^21823526680 is an apocalyptic number.

21823526680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21823526680 is an abundant number, since it is smaller than the sum of its proper divisors (27279408440).

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

21823526680 is a wasteful number, since it uses less digits than its factorization.

21823526680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545588178 (or 545588174 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 21823526680 in words is "twenty-one billion, eight hundred twenty-three million, five hundred twenty-six thousand, six hundred eighty".