6543543156 has 48 divisors (see below), whose sum is σ = 15451188480. Its totient is φ = 2155139200.

The previous prime is 6543543137. The next prime is 6543543161. The reversal of 6543543156 is 6513453456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611605 + ... + 622211.

It is an arithmetic number, because the mean of its divisors is an integer number (321899760).

Almost surely, 2^6543543156 is an apocalyptic number.

It is an amenable number.

6543543156 is an abundant number, since it is smaller than the sum of its proper divisors (8907645324).

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

6543543156 is a wasteful number, since it uses less digits than its factorization.

6543543156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11224 (or 11222 counting only the distinct ones).

The product of its digits is 648000, while the sum is 42.

The square root of 6543543156 is about 80892.1699300989. The cubic root of 6543543156 is about 1870.4136231279.

The spelling of 6543543156 in words is "six billion, five hundred forty-three million, five hundred forty-three thousand, one hundred fifty-six".