20541133550 has 96 divisors (see below), whose sum is σ = 45243532800. Its totient is φ = 6788799360.

The previous prime is 20541133519. The next prime is 20541133589. The reversal of 20541133550 is 5533114502.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8352221 + ... + 8354679.

It is an arithmetic number, because the mean of its divisors is an integer number (471286800).

Almost surely, 2^20541133550 is an apocalyptic number.

20541133550 is an abundant number, since it is smaller than the sum of its proper divisors (24702399250).

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

20541133550 is a wasteful number, since it uses less digits than its factorization.

20541133550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 20541133550 in words is "twenty billion, five hundred forty-one million, one hundred thirty-three thousand, five hundred fifty".