4120640866 has 16 divisors (see below), whose sum is σ = 6245800704. Its totient is φ = 2038738464.

The previous prime is 4120640861. The next prime is 4120640879. The reversal of 4120640866 is 6680460214.

It is a super-2 number, since 2×4120640866² = 33959362293098459912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4120640861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286110 + ... + 300166.

It is an arithmetic number, because the mean of its divisors is an integer number (390362544).

Almost surely, 2^4120640866 is an apocalyptic number.

4120640866 is a deficient number, since it is larger than the sum of its proper divisors (2125159838).

4120640866 is a wasteful number, since it uses less digits than its factorization.

4120640866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15585.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 4120640866 is about 64192.2181109206. The cubic root of 4120640866 is about 1603.2020336816.

The spelling of 4120640866 in words is "four billion, one hundred twenty million, six hundred forty thousand, eight hundred sixty-six".