6543432101 has 16 divisors (see below), whose sum is σ = 6697342080. Its totient is φ = 6391630080.

The previous prime is 6543432079. The next prime is 6543432109. The reversal of 6543432101 is 1012343456.

6543432101 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a cyclic number.

It is not a de Polignac number, because 6543432101 - 2¹⁸ = 6543169957 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543432109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6333881 + ... + 6334913.

It is an arithmetic number, because the mean of its divisors is an integer number (418583880).

Almost surely, 2^6543432101 is an apocalyptic number.

It is an amenable number.

6543432101 is a deficient number, since it is larger than the sum of its proper divisors (153909979).

6543432101 is a wasteful number, since it uses less digits than its factorization.

6543432101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 6543432101 is about 80891.4834886838. The cubic root of 6543432101 is about 1870.4030417066.

Adding to 6543432101 its reverse (1012343456), we get a palindrome (7555775557).

The spelling of 6543432101 in words is "six billion, five hundred forty-three million, four hundred thirty-two thousand, one hundred one".