2165045057311 has 4 divisors (see below), whose sum is σ = 2197359162712. Its totient is φ = 2132730951912.

The previous prime is 2165045057299. The next prime is 2165045057327. The reversal of 2165045057311 is 1137505405612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2165045057311 - 2¹³ = 2165045049119 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 (2165045057341) 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, 16157052600 + ... + 16157052733.

It is an arithmetic number, because the mean of its divisors is an integer number (549339790678).

Almost surely, 2^{2165045057311} is an apocalyptic number.

2165045057311 is a deficient number, since it is larger than the sum of its proper divisors (32314105401).

2165045057311 is an equidigital number, since it uses as much as digits as its factorization.

2165045057311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32314105400.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 2165045057311 in words is "two trillion, one hundred sixty-five billion, forty-five million, fifty-seven thousand, three hundred eleven".