2765638712 has 16 divisors (see below), whose sum is σ = 5352849600. Its totient is φ = 1338212160.

The previous prime is 2765638669. The next prime is 2765638717. The reversal of 2765638712 is 2178365672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2765638717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5575637 + ... + 5576132.

It is an arithmetic number, because the mean of its divisors is an integer number (334553100).

Almost surely, 2^2765638712 is an apocalyptic number.

It is an amenable number.

2765638712 is a deficient number, since it is larger than the sum of its proper divisors (2587210888).

2765638712 is a wasteful number, since it uses less digits than its factorization.

2765638712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151806 (or 11151802 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 2765638712 is about 52589.3402886935. The cubic root of 2765638712 is about 1403.6704217973.

The spelling of 2765638712 in words is "two billion, seven hundred sixty-five million, six hundred thirty-eight thousand, seven hundred twelve".