21844310850 has 120 divisors (see below), whose sum is σ = 61550489088. Its totient is φ = 5743029600.

The previous prime is 21844310833. The next prime is 21844310867. The reversal of 21844310850 is 5801344812.

21844310850 is a `hidden beast` number, since 218 + 4 + 431 + 0 + 8 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21844310833) and next prime (21844310867).

It is a super-2 number, since 2×21844310850² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 249567 + ... + 325533.

Almost surely, 2^21844310850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21844310850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30775244544).

21844310850 is an abundant number, since it is smaller than the sum of its proper divisors (39706178238).

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

21844310850 is a wasteful number, since it uses less digits than its factorization.

21844310850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76062 (or 76048 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 21844310850 in words is "twenty-one billion, eight hundred forty-four million, three hundred ten thousand, eight hundred fifty".