2664610613065 has 4 divisors (see below), whose sum is σ = 3197532735684. Its totient is φ = 2131688490448.

The previous prime is 2664610613053. The next prime is 2664610613069. The reversal of 2664610613065 is 5603160164662.

It is a happy number.

2664610613065 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 918668574784 + 1745942038281 = 958472^2 + 1321341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664610613065 - 2²¹ = 2664608515913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2664610613069) 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, 266461061302 + ... + 266461061311.

It is an arithmetic number, because the mean of its divisors is an integer number (799383183921).

Almost surely, 2^{2664610613065} is an apocalyptic number.

It is an amenable number.

2664610613065 is a deficient number, since it is larger than the sum of its proper divisors (532922122619).

2664610613065 is an equidigital number, since it uses as much as digits as its factorization.

2664610613065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532922122618.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 2664610613065 in words is "two trillion, six hundred sixty-four billion, six hundred ten million, six hundred thirteen thousand, sixty-five".