4262561668 has 12 divisors (see below), whose sum is σ = 7461298012. Its totient is φ = 2130762240.

The previous prime is 4262561621. The next prime is 4262561671. The reversal of 4262561668 is 8661652624.

It can be written as a sum of positive squares in 2 ways, for example, as 2623283524 + 1639278144 = 51218^2 + 40488^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110853 + ... + 144268.

Almost surely, 2^4262561668 is an apocalyptic number.

It is an amenable number.

4262561668 is a deficient number, since it is larger than the sum of its proper divisors (3198736344).

4262561668 is a wasteful number, since it uses less digits than its factorization.

4262561668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259302 (or 259300 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 4262561668 is about 65288.2965622477. The cubic root of 4262561668 is about 1621.4002104343.

The spelling of 4262561668 in words is "four billion, two hundred sixty-two million, five hundred sixty-one thousand, six hundred sixty-eight".