256055065345 has 4 divisors (see below), whose sum is σ = 307266078420. Its totient is φ = 204844052272.

The previous prime is 256055065313. The next prime is 256055065349. The reversal of 256055065345 is 543560550652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129723869584 + 126331195761 = 360172^2 + 355431^2 .

It is a cyclic number.

It is not a de Polignac number, because 256055065345 - 2⁵ = 256055065313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256055065295 and 256055065304.

It is not an unprimeable number, because it can be changed into a prime (256055065349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25605506530 + ... + 25605506539.

It is an arithmetic number, because the mean of its divisors is an integer number (76816519605).

Almost surely, 2^256055065345 is an apocalyptic number.

It is an amenable number.

256055065345 is a deficient number, since it is larger than the sum of its proper divisors (51211013075).

256055065345 is an equidigital number, since it uses as much as digits as its factorization.

256055065345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51211013074.

The product of its (nonzero) digits is 2700000, while the sum is 46.

The spelling of 256055065345 in words is "two hundred fifty-six billion, fifty-five million, sixty-five thousand, three hundred forty-five".