256010666135 has 16 divisors (see below), whose sum is σ = 362426161152. Its totient is φ = 169887261600.

The previous prime is 256010666129. The next prime is 256010666161. The reversal of 256010666135 is 531666010652.

It is not a de Polignac number, because 256010666135 - 2⁶ = 256010666071 is a prime.

It is a super-2 number, since 2×256010666135² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256010666092 and 256010666101.

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, 117976181 + ... + 117978350.

It is an arithmetic number, because the mean of its divisors is an integer number (22651635072).

Almost surely, 2^256010666135 is an apocalyptic number.

256010666135 is a deficient number, since it is larger than the sum of its proper divisors (106415495017).

256010666135 is a wasteful number, since it uses less digits than its factorization.

256010666135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235954574.

The product of its (nonzero) digits is 194400, while the sum is 41.

Adding to 256010666135 its reverse (531666010652), we get a palindrome (787676676787).

The spelling of 256010666135 in words is "two hundred fifty-six billion, ten million, six hundred sixty-six thousand, one hundred thirty-five".