2665565465253 has 4 divisors (see below), whose sum is σ = 3554087287008. Its totient is φ = 1777043643500.

The previous prime is 2665565465243. The next prime is 2665565465273. The reversal of 2665565465253 is 3525645655662.

It is a happy number.

2665565465253 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2665565465253 - 2⁵ = 2665565465221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665565465243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444260910873 + ... + 444260910878.

It is an arithmetic number, because the mean of its divisors is an integer number (888521821752).

Almost surely, 2^{2665565465253} is an apocalyptic number.

It is an amenable number.

2665565465253 is a deficient number, since it is larger than the sum of its proper divisors (888521821755).

2665565465253 is an equidigital number, since it uses as much as digits as its factorization.

2665565465253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888521821754.

The product of its digits is 194400000, while the sum is 60.

The spelling of 2665565465253 in words is "two trillion, six hundred sixty-five billion, five hundred sixty-five million, four hundred sixty-five thousand, two hundred fifty-three".