20533020444 has 36 divisors (see below), whose sum is σ = 54956026944. Its totient is φ = 6441731712.

The previous prime is 20533020421. The next prime is 20533020467. The reversal of 20533020444 is 44402033502.

It is an interprime number because it is at equal distance from previous prime (20533020421) and next prime (20533020467).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16774732 + ... + 16775955.

It is an arithmetic number, because the mean of its divisors is an integer number (1526556304).

Almost surely, 2^20533020444 is an apocalyptic number.

It is an amenable number.

20533020444 is an abundant number, since it is smaller than the sum of its proper divisors (34423006500).

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

20533020444 is a wasteful number, since it uses less digits than its factorization.

20533020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33550714 (or 33550709 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20533020444 its reverse (44402033502), we get a palindrome (64935053946).

The spelling of 20533020444 in words is "twenty billion, five hundred thirty-three million, twenty thousand, four hundred forty-four".