6543681496 has 32 divisors (see below), whose sum is σ = 13584588480. Its totient is φ = 2930004000.

The previous prime is 6543681461. The next prime is 6543681499. The reversal of 6543681496 is 6941863456.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543681499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549030 + ... + 560821.

It is an arithmetic number, because the mean of its divisors is an integer number (424518390).

Almost surely, 2^6543681496 is an apocalyptic number.

It is an amenable number.

6543681496 is an abundant number, since it is smaller than the sum of its proper divisors (7040906984).

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

6543681496 is a wasteful number, since it uses less digits than its factorization.

6543681496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109935 (or 1109931 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 6543681496 is about 80893.0250145215. The cubic root of 6543681496 is about 1870.4268041212.

The spelling of 6543681496 in words is "six billion, five hundred forty-three million, six hundred eighty-one thousand, four hundred ninety-six".