4128029961 has 16 divisors (see below), whose sum is σ = 6012438528. Its totient is φ = 2498490000.

The previous prime is 4128029959. The next prime is 4128029989. The reversal of 4128029961 is 1699208214.

4128029961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4128029961 - 2¹ = 4128029959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4128025961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58501 + ... + 108066.

It is an arithmetic number, because the mean of its divisors is an integer number (375777408).

Almost surely, 2^4128029961 is an apocalyptic number.

It is an amenable number.

4128029961 is a deficient number, since it is larger than the sum of its proper divisors (1884408567).

4128029961 is a wasteful number, since it uses less digits than its factorization.

4128029961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167332.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 4128029961 is about 64249.7467777111. The cubic root of 4128029961 is about 1604.1597437986.

The spelling of 4128029961 in words is "four billion, one hundred twenty-eight million, twenty-nine thousand, nine hundred sixty-one".