6536068993 has 4 divisors (see below), whose sum is σ = 6545781508. Its totient is φ = 6526356480.

The previous prime is 6536068969. The next prime is 6536069003. The reversal of 6536068993 is 3998606356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1963198864 + 4572870129 = 44308^2 + 67623^2 .

It is a cyclic number.

It is not a de Polignac number, because 6536068993 - 2²¹ = 6533971841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6536068393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855248 + ... + 4856593.

It is an arithmetic number, because the mean of its divisors is an integer number (1636445377).

Almost surely, 2^6536068993 is an apocalyptic number.

It is an amenable number.

6536068993 is a deficient number, since it is larger than the sum of its proper divisors (9712515).

6536068993 is an equidigital number, since it uses as much as digits as its factorization.

6536068993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9712514.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The square root of 6536068993 is about 80845.9584209378. The cubic root of 6536068993 is about 1869.7012108052.

The spelling of 6536068993 in words is "six billion, five hundred thirty-six million, sixty-eight thousand, nine hundred ninety-three".