20211829844 has 12 divisors (see below), whose sum is σ = 35374334100. Its totient is φ = 10104877248.

The previous prime is 20211829843. The next prime is 20211829867. The reversal of 20211829844 is 44892811202.

It can be written as a sum of positive squares in 2 ways, for example, as 4037077444 + 16174752400 = 63538^2 + 127180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211829843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214739 + ... + 294170.

It is an arithmetic number, because the mean of its divisors is an integer number (2947861175).

Almost surely, 2^20211829844 is an apocalyptic number.

It is an amenable number.

20211829844 is a deficient number, since it is larger than the sum of its proper divisors (15162504256).

20211829844 is a wasteful number, since it uses less digits than its factorization.

20211829844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518842 (or 518840 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 20211829844 in words is "twenty billion, two hundred eleven million, eight hundred twenty-nine thousand, eight hundred forty-four".