256065027764 has 96 divisors (see below), whose sum is σ = 586049458176. Its totient is φ = 95001661440.

The previous prime is 256065027739. The next prime is 256065027767. The reversal of 256065027764 is 467720560652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256065027767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1665197 + ... + 1812459.

It is an arithmetic number, because the mean of its divisors is an integer number (6104681856).

Almost surely, 2^256065027764 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 256065027764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293024729088).

256065027764 is an abundant number, since it is smaller than the sum of its proper divisors (329984430412).

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

256065027764 is a wasteful number, since it uses less digits than its factorization.

256065027764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147585 (or 147583 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 256065027764 in words is "two hundred fifty-six billion, sixty-five million, twenty-seven thousand, seven hundred sixty-four".