2668145564 has 24 divisors (see below), whose sum is σ = 5337403008. Its totient is φ = 1143252720.

The previous prime is 2668145537. The next prime is 2668145573. The reversal of 2668145564 is 4655418662.

2668145564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 221579 + ... + 233309.

It is an arithmetic number, because the mean of its divisors is an integer number (222391792).

Almost surely, 2^2668145564 is an apocalyptic number.

It is an amenable number.

2668145564 is an abundant number, since it is smaller than the sum of its proper divisors (2669257444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2668145564 is a wasteful number, since it uses less digits than its factorization.

2668145564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865 (or 19863 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 2668145564 is about 51654.0953265082. The cubic root of 2668145564 is about 1386.9788538609.

The spelling of 2668145564 in words is "two billion, six hundred sixty-eight million, one hundred forty-five thousand, five hundred sixty-four".