20533420550 has 24 divisors (see below), whose sum is σ = 38466939000. Its totient is φ = 8154276480.

The previous prime is 20533420541. The next prime is 20533420553. The reversal of 20533420550 is 5502433502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533420553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1470275 + ... + 1484174.

It is an arithmetic number, because the mean of its divisors is an integer number (1602789125).

Almost surely, 2^20533420550 is an apocalyptic number.

20533420550 is a deficient number, since it is larger than the sum of its proper divisors (17933518450).

20533420550 is a wasteful number, since it uses less digits than its factorization.

20533420550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954600 (or 2954595 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 20533420550 in words is "twenty billion, five hundred thirty-three million, four hundred twenty thousand, five hundred fifty".