2665139582 has 16 divisors (see below), whose sum is σ = 4767455232. Its totient is φ = 1092541560.

The previous prime is 2665139549. The next prime is 2665139591. The reversal of 2665139582 is 2859315662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4138094 + ... + 4138737.

It is an arithmetic number, because the mean of its divisors is an integer number (297965952).

Almost surely, 2^2665139582 is an apocalyptic number.

2665139582 is a deficient number, since it is larger than the sum of its proper divisors (2102315650).

2665139582 is a wasteful number, since it uses less digits than its factorization.

2665139582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276863.

The product of its digits is 777600, while the sum is 47.

The square root of 2665139582 is about 51624.9898983041. The cubic root of 2665139582 is about 1386.4577928141.

The spelling of 2665139582 in words is "two billion, six hundred sixty-five million, one hundred thirty-nine thousand, five hundred eighty-two".