2665478305 has 16 divisors (see below), whose sum is σ = 3781566720. Its totient is φ = 1764729792.

The previous prime is 2665478267. The next prime is 2665478311. The reversal of 2665478305 is 5038745662.

It is not a de Polignac number, because 2665478305 - 2³¹ = 517994657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312029 + ... + 1314058.

It is an arithmetic number, because the mean of its divisors is an integer number (236347920).

Almost surely, 2^2665478305 is an apocalyptic number.

It is an amenable number.

2665478305 is a deficient number, since it is larger than the sum of its proper divisors (1116088415).

2665478305 is a wasteful number, since it uses less digits than its factorization.

2665478305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626128.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The square root of 2665478305 is about 51628.2704048857. The cubic root of 2665478305 is about 1386.5165271048.

The spelling of 2665478305 in words is "two billion, six hundred sixty-five million, four hundred seventy-eight thousand, three hundred five".