256516550462756 has 6 divisors (see below), whose sum is σ = 448903963309830. Its totient is φ = 128258275231376.

The previous prime is 256516550462743. The next prime is 256516550462813. The reversal of 256516550462756 is 657264055615652.

It can be written as a sum of positive squares in only one way, i.e., 137803322749156 + 118713227713600 = 11738966^2 + 10895560^2 .

It is a super-2 number, since 2×256516550462756² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256516550462692 and 256516550462701.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32064568807841 + ... + 32064568807848.

It is an arithmetic number, because the mean of its divisors is an integer number (74817327218305).

Almost surely, 2^{256516550462756} is an apocalyptic number.

It is an amenable number.

256516550462756 is a deficient number, since it is larger than the sum of its proper divisors (192387412847074).

256516550462756 is a wasteful number, since it uses less digits than its factorization.

256516550462756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64129137615693 (or 64129137615691 counting only the distinct ones).

The product of its (nonzero) digits is 453600000, while the sum is 65.

The spelling of 256516550462756 in words is "two hundred fifty-six trillion, five hundred sixteen billion, five hundred fifty million, four hundred sixty-two thousand, seven hundred fifty-six".