6542536816 has 40 divisors (see below), whose sum is σ = 12861632160. Its totient is φ = 3223489536.

The previous prime is 6542536811. The next prime is 6542536837. The reversal of 6542536816 is 6186352456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542536811) 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, 1819116 + ... + 1822708.

It is an arithmetic number, because the mean of its divisors is an integer number (321540804).

Almost surely, 2^6542536816 is an apocalyptic number.

It is an amenable number.

6542536816 is a deficient number, since it is larger than the sum of its proper divisors (6319095344).

6542536816 is a wasteful number, since it uses less digits than its factorization.

6542536816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233 (or 5227 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The square root of 6542536816 is about 80885.9494349915. The cubic root of 6542536816 is about 1870.3177337653.

The spelling of 6542536816 in words is "six billion, five hundred forty-two million, five hundred thirty-six thousand, eight hundred sixteen".