4128105965 has 16 divisors (see below), whose sum is σ = 5218608000. Its totient is φ = 3126174912.

The previous prime is 4128105959. The next prime is 4128105977. The reversal of 4128105965 is 5695018214.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4128105965 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107111 + ... + 140459.

It is an arithmetic number, because the mean of its divisors is an integer number (326163000).

Almost surely, 2^4128105965 is an apocalyptic number.

It is an amenable number.

4128105965 is a deficient number, since it is larger than the sum of its proper divisors (1090502035).

4128105965 is a wasteful number, since it uses less digits than its factorization.

4128105965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34676.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 4128105965 is about 64250.3382481369. The cubic root of 4128105965 is about 1604.1695888345.

The spelling of 4128105965 in words is "four billion, one hundred twenty-eight million, one hundred five thousand, nine hundred sixty-five".