20450543733 has 12 divisors (see below), whose sum is σ = 31094394240. Its totient is φ = 12916132776.

The previous prime is 20450543713. The next prime is 20450543747. The reversal of 20450543733 is 33734505402.

20450543733 is a `hidden beast` number, since 2 + 0 + 45 + 0 + 543 + 73 + 3 = 666.

It is not a de Polignac number, because 20450543733 - 2¹⁶ = 20450478197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450543713) 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, 59796741 + ... + 59797082.

It is an arithmetic number, because the mean of its divisors is an integer number (2591199520).

Almost surely, 2^20450543733 is an apocalyptic number.

It is an amenable number.

20450543733 is a deficient number, since it is larger than the sum of its proper divisors (10643850507).

20450543733 is a wasteful number, since it uses less digits than its factorization.

20450543733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119593848 (or 119593845 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 36.

The spelling of 20450543733 in words is "twenty billion, four hundred fifty million, five hundred forty-three thousand, seven hundred thirty-three".