2665375379 has 4 divisors (see below), whose sum is σ = 2822162184. Its totient is φ = 2508588576.

The previous prime is 2665375369. The next prime is 2665375417. The reversal of 2665375379 is 9735735662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9735735662 = 2 ⋅4867867831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665375379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2665375379.

It is not an unprimeable number, because it can be changed into a prime (2665375369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78393377 + ... + 78393410.

It is an arithmetic number, because the mean of its divisors is an integer number (705540546).

Almost surely, 2^2665375379 is an apocalyptic number.

2665375379 is a deficient number, since it is larger than the sum of its proper divisors (156786805).

2665375379 is a wasteful number, since it uses less digits than its factorization.

2665375379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156786804.

The product of its digits is 7144200, while the sum is 53.

The square root of 2665375379 is about 51627.2735964238. The cubic root of 2665375379 is about 1386.4986803470.

The spelling of 2665375379 in words is "two billion, six hundred sixty-five million, three hundred seventy-five thousand, three hundred seventy-nine".