256000216007 has 2 divisors, whose sum is σ = 256000216008. Its totient is φ = 256000216006.

The previous prime is 256000215959. The next prime is 256000216013. The reversal of 256000216007 is 700612000652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256000216007 - 2¹⁰ = 256000214983 is a prime.

It is a super-2 number, since 2×256000216007² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256000216027) 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 as a sum of consecutive naturals, namely, 128000108003 + 128000108004.

It is an arithmetic number, because the mean of its divisors is an integer number (128000108004).

Almost surely, 2^256000216007 is an apocalyptic number.

256000216007 is a deficient number, since it is larger than the sum of its proper divisors (1).

256000216007 is an equidigital number, since it uses as much as digits as its factorization.

256000216007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 256000216007 its reverse (700612000652), we get a palindrome (956612216659).

The spelling of 256000216007 in words is "two hundred fifty-six billion, two hundred sixteen thousand, seven".