20533035996 has 144 divisors (see below), whose sum is σ = 60003871200. Its totient is φ = 5860915200.

The previous prime is 20533035959. The next prime is 20533036001. The reversal of 20533035996 is 69953033502.

20533035996 is a `hidden beast` number, since 2 + 0 + 53 + 3 + 0 + 3 + 599 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 449040 + ... + 492648.

It is an arithmetic number, because the mean of its divisors is an integer number (416693550).

Almost surely, 2^20533035996 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 20533035996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30001935600).

20533035996 is an abundant number, since it is smaller than the sum of its proper divisors (39470835204).

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

20533035996 is a wasteful number, since it uses less digits than its factorization.

20533035996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43700 (or 43695 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 45.

It can be divided in two parts, 2053 and 3035996, that added together give a square (3038049 = 1743²).

The spelling of 20533035996 in words is "twenty billion, five hundred thirty-three million, thirty-five thousand, nine hundred ninety-six".