21774754848 has 288 divisors, whose sum is σ = 73569420288. Its totient is φ = 5575180800.

The previous prime is 21774754789. The next prime is 21774754867. The reversal of 21774754848 is 84845747712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3670861 + ... + 3676787.

It is an arithmetic number, because the mean of its divisors is an integer number (255449376).

Almost surely, 2^21774754848 is an apocalyptic number.

21774754848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21774754848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36784710144).

21774754848 is an abundant number, since it is smaller than the sum of its proper divisors (51794665440).

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

21774754848 is a wasteful number, since it uses less digits than its factorization.

21774754848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036 (or 6021 counting only the distinct ones).

The product of its digits is 14049280, while the sum is 57.

The spelling of 21774754848 in words is "twenty-one billion, seven hundred seventy-four million, seven hundred fifty-four thousand, eight hundred forty-eight".