20043332550 has 72 divisors (see below), whose sum is σ = 55844222616. Its totient is φ = 5344885440.

The previous prime is 20043332531. The next prime is 20043332581. The reversal of 20043332550 is 5523334002.

20043332550 is a `hidden beast` number, since 200 + 433 + 3 + 25 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 812679 + ... + 836978.

It is an arithmetic number, because the mean of its divisors is an integer number (775614203).

Almost surely, 2^20043332550 is an apocalyptic number.

20043332550 is an abundant number, since it is smaller than the sum of its proper divisors (35800890066).

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

20043332550 is a wasteful number, since it uses less digits than its factorization.

20043332550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649684 (or 1649667 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

Adding to 20043332550 its reverse (5523334002), we get a palindrome (25566666552).

The spelling of 20043332550 in words is "twenty billion, forty-three million, three hundred thirty-two thousand, five hundred fifty".