6811312065 has 16 divisors (see below), whose sum is σ = 10913662656. Its totient is φ = 3627512000.

The previous prime is 6811312063. The next prime is 6811312087. The reversal of 6811312065 is 5602131186.

6811312065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6811312065 - 2¹ = 6811312063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6811312063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313371 + ... + 334400.

It is an arithmetic number, because the mean of its divisors is an integer number (682103916).

Almost surely, 2^6811312065 is an apocalyptic number.

It is an amenable number.

6811312065 is a deficient number, since it is larger than the sum of its proper divisors (4102350591).

6811312065 is a wasteful number, since it uses less digits than its factorization.

6811312065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648480.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 6811312065 is about 82530.6734796221. The cubic root of 6811312065 is about 1895.5864374541.

The spelling of 6811312065 in words is "six billion, eight hundred eleven million, three hundred twelve thousand, sixty-five".