20533143043 has 16 divisors (see below), whose sum is σ = 24253075456. Its totient is φ = 17011257120.

The previous prime is 20533143017. The next prime is 20533143053. The reversal of 20533143043 is 34034133502.

It is a cyclic number.

It is not a de Polignac number, because 20533143043 - 2²¹ = 20531045891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533143053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121105 + ... + 236077.

It is an arithmetic number, because the mean of its divisors is an integer number (1515817216).

Almost surely, 2^20533143043 is an apocalyptic number.

20533143043 is a deficient number, since it is larger than the sum of its proper divisors (3719932413).

20533143043 is a wasteful number, since it uses less digits than its factorization.

20533143043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115834.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 20533143043 its reverse (34034133502), we get a palindrome (54567276545).

The spelling of 20533143043 in words is "twenty billion, five hundred thirty-three million, one hundred forty-three thousand, forty-three".