20533450208 has 24 divisors (see below), whose sum is σ = 40433784048. Its totient is φ = 10264552704.

The previous prime is 20533450207. The next prime is 20533450211. The reversal of 20533450208 is 80205433502.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533450207) 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, 91460 + ... + 222332.

It is an arithmetic number, because the mean of its divisors is an integer number (1684741002).

Almost surely, 2^20533450208 is an apocalyptic number.

It is an amenable number.

20533450208 is a deficient number, since it is larger than the sum of its proper divisors (19900333840).

20533450208 is a wasteful number, since it uses less digits than its factorization.

20533450208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135786 (or 135778 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20533450208 in words is "twenty billion, five hundred thirty-three million, four hundred fifty thousand, two hundred eight".