20543298434 has 32 divisors (see below), whose sum is σ = 31907779200. Its totient is φ = 9912153600.

The previous prime is 20543298409. The next prime is 20543298439. The reversal of 20543298434 is 43489234502.

20543298434 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20543298434² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20543298439) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10379657 + ... + 10381635.

It is an arithmetic number, because the mean of its divisors is an integer number (997118100).

Almost surely, 2^20543298434 is an apocalyptic number.

20543298434 is a deficient number, since it is larger than the sum of its proper divisors (11364480766).

20543298434 is a wasteful number, since it uses less digits than its factorization.

20543298434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 20543298434 in words is "twenty billion, five hundred forty-three million, two hundred ninety-eight thousand, four hundred thirty-four".