6542652005 has 8 divisors (see below), whose sum is σ = 7852251672. Its totient is φ = 5233408768.

The previous prime is 6542652001. The next prime is 6542652023. The reversal of 6542652005 is 5002562456.

It can be written as a sum of positive squares in 4 ways, for example, as 870604036 + 5672047969 = 29506^2 + 75313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6542652005 - 2² = 6542652001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542652001) 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, 46904 + ... + 123633.

It is an arithmetic number, because the mean of its divisors is an integer number (981531459).

Almost surely, 2^6542652005 is an apocalyptic number.

It is an amenable number.

6542652005 is a deficient number, since it is larger than the sum of its proper divisors (1309599667).

6542652005 is a wasteful number, since it uses less digits than its factorization.

6542652005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178215.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6542652005 is about 80886.6614776503. The cubic root of 6542652005 is about 1870.3287100768.

The spelling of 6542652005 in words is "six billion, five hundred forty-two million, six hundred fifty-two thousand, five".