4028065520256 has 48 divisors (see below), whose sum is σ = 11591178128010. Its totient is φ = 1342688506368.

The previous prime is 4028065520239. The next prime is 4028065520257. The reversal of 4028065520256 is 6520255608204.

It is a happy number.

4028065520256 is a `hidden beast` number, since 40 + 2 + 8 + 0 + 6 + 552 + 0 + 2 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3762824040000 + 265241480256 = 1939800^2 + 515016^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (4028065520257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748291175 + ... + 1748293478.

Almost surely, 2^{4028065520256} is an apocalyptic number.

It is an amenable number.

4028065520256 is an abundant number, since it is smaller than the sum of its proper divisors (7563112607754).

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

4028065520256 is a wasteful number, since it uses less digits than its factorization.

4028065520256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496584673 (or 3496584658 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 4028065520256 in words is "four trillion, twenty-eight billion, sixty-five million, five hundred twenty thousand, two hundred fifty-six".