20535112044 has 72 divisors (see below), whose sum is σ = 52827072480. Its totient is φ = 6724852992.

The previous prime is 20535112043. The next prime is 20535112093. The reversal of 20535112044 is 44021153502.

20535112044 is a `hidden beast` number, since 2 + 0 + 535 + 1 + 120 + 4 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20535111999 and 20535112017.

It is not an unprimeable number, because it can be changed into a prime (20535112043) 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, 482617 + ... + 523439.

It is an arithmetic number, because the mean of its divisors is an integer number (733709340).

Almost surely, 2^20535112044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20535112044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26413536240).

20535112044 is an abundant number, since it is smaller than the sum of its proper divisors (32291960436).

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

20535112044 is a wasteful number, since it uses less digits than its factorization.

20535112044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41079 (or 41074 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20535112044 its reverse (44021153502), we get a palindrome (64556265546).

The spelling of 20535112044 in words is "twenty billion, five hundred thirty-five million, one hundred twelve thousand, forty-four".