6543111120 has 480 divisors, whose sum is σ = 25686355968. Its totient is φ = 1365590016.

The previous prime is 6543111101. The next prime is 6543111163. The reversal of 6543111120 is 211113456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19415592 + ... + 19415928.

Almost surely, 2^6543111120 is an apocalyptic number.

6543111120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6543111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12843177984).

6543111120 is an abundant number, since it is smaller than the sum of its proper divisors (19143244848).

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

6543111120 is a wasteful number, since it uses less digits than its factorization.

6543111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 6543111120 is about 80889.4994421402. The cubic root of 6543111120 is about 1870.3724576723.

Adding to 6543111120 its reverse (211113456), we get a palindrome (6754224576).

The spelling of 6543111120 in words is "six billion, five hundred forty-three million, one hundred eleven thousand, one hundred twenty".