21841842405800 has 24 divisors (see below), whose sum is σ = 50782283593950. Its totient is φ = 8736736962240.

The previous prime is 21841842405797. The next prime is 21841842405821. The reversal of 21841842405800 is 850424814812.

It can be written as a sum of positive squares in 3 ways, for example, as 18354592419076 + 3487249986724 = 4284226^2 + 1867418^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54604605815 + ... + 54604606214.

Almost surely, 2^{21841842405800} is an apocalyptic number.

21841842405800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21841842405800 is an abundant number, since it is smaller than the sum of its proper divisors (28940441188150).

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

21841842405800 is a wasteful number, since it uses less digits than its factorization.

21841842405800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109209212045 (or 109209212036 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 47.

The spelling of 21841842405800 in words is "twenty-one trillion, eight hundred forty-one billion, eight hundred forty-two million, four hundred five thousand, eight hundred".