6543195542 has 16 divisors (see below), whose sum is σ = 10576948032. Its totient is φ = 3017887680.

The previous prime is 6543195481. The next prime is 6543195559. The reversal of 6543195542 is 2455913456.

It is a junction number, because it is equal to n+sod(n) for n = 6543195493 and 6543195502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45959 + ... + 123282.

It is an arithmetic number, because the mean of its divisors is an integer number (661059252).

Almost surely, 2^6543195542 is an apocalyptic number.

6543195542 is a deficient number, since it is larger than the sum of its proper divisors (4033752490).

6543195542 is a wasteful number, since it uses less digits than its factorization.

6543195542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170743.

The product of its digits is 648000, while the sum is 44.

The square root of 6543195542 is about 80890.0212758039. The cubic root of 6543195542 is about 1870.3805017511.

The spelling of 6543195542 in words is "six billion, five hundred forty-three million, one hundred ninety-five thousand, five hundred forty-two".