4128148668 has 72 divisors (see below), whose sum is σ = 11215685712. Its totient is φ = 1178343936.

The previous prime is 4128148643. The next prime is 4128148693. The reversal of 4128148668 is 8668418214.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4128148643) and next prime (4128148693).

It is a super-2 number, since 2×4128148668² = 34083222850220348448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 759930 + ... + 765342.

Almost surely, 2^4128148668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4128148668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5607842856).

4128148668 is an abundant number, since it is smaller than the sum of its proper divisors (7087537044).

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

4128148668 is a wasteful number, since it uses less digits than its factorization.

4128148668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731 (or 6722 counting only the distinct ones).

The product of its digits is 589824, while the sum is 48.

The square root of 4128148668 is about 64250.6705645941. The cubic root of 4128148668 is about 1604.1751202346.

The spelling of 4128148668 in words is "four billion, one hundred twenty-eight million, one hundred forty-eight thousand, six hundred sixty-eight".