2665143755 has 16 divisors (see below), whose sum is σ = 3262803744. Its totient is φ = 2089359360.

The previous prime is 2665143739. The next prime is 2665143757. The reversal of 2665143755 is 5573415662.

It is a happy number.

It is not a de Polignac number, because 2665143755 - 2⁴ = 2665143739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665143757) 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, 44045 + ... + 85265.

It is an arithmetic number, because the mean of its divisors is an integer number (203925234).

Almost surely, 2^2665143755 is an apocalyptic number.

2665143755 is a deficient number, since it is larger than the sum of its proper divisors (597659989).

2665143755 is a wasteful number, since it uses less digits than its factorization.

2665143755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41486.

The product of its digits is 756000, while the sum is 44.

The square root of 2665143755 is about 51625.0303147611. The cubic root of 2665143755 is about 1386.4585164392.

The spelling of 2665143755 in words is "two billion, six hundred sixty-five million, one hundred forty-three thousand, seven hundred fifty-five".