21950050850 has 48 divisors (see below), whose sum is σ = 50248742208. Its totient is φ = 6946827840.

The previous prime is 21950050849. The next prime is 21950050853. The reversal of 21950050850 is 5805005912.

21950050850 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21950050850.

It is not an unprimeable number, because it can be changed into a prime (21950050853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2407544 + ... + 2416643.

It is an arithmetic number, because the mean of its divisors is an integer number (1046848796).

Almost surely, 2^21950050850 is an apocalyptic number.

21950050850 is an abundant number, since it is smaller than the sum of its proper divisors (28298691358).

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

21950050850 is a wasteful number, since it uses less digits than its factorization.

21950050850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824219 (or 4824214 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 21950050850 in words is "twenty-one billion, nine hundred fifty million, fifty thousand, eight hundred fifty".