20543432116 has 12 divisors (see below), whose sum is σ = 36234085888. Its totient is φ = 10190836152.

The previous prime is 20543432101. The next prime is 20543432207. The reversal of 20543432116 is 61123434502.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20219406 + ... + 20220421.

Almost surely, 2^20543432116 is an apocalyptic number.

It is an amenable number.

20543432116 is a deficient number, since it is larger than the sum of its proper divisors (15690653772).

20543432116 is a wasteful number, since it uses less digits than its factorization.

20543432116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40439958 (or 40439956 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20543432116 its reverse (61123434502), we get a palindrome (81666866618).

The spelling of 20543432116 in words is "twenty billion, five hundred forty-three million, four hundred thirty-two thousand, one hundred sixteen".