256563010101 has 8 divisors (see below), whose sum is σ = 342856213920. Its totient is φ = 170655906512.

The previous prime is 256563010097. The next prime is 256563010117. The reversal of 256563010101 is 101010365652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256563010101 - 2² = 256563010097 is a prime.

It is a super-3 number, since 3×256563010101³ (a number of 35 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256563010601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96523506 + ... + 96526163.

It is an arithmetic number, because the mean of its divisors is an integer number (42857026740).

Almost surely, 2^256563010101 is an apocalyptic number.

It is an amenable number.

256563010101 is a deficient number, since it is larger than the sum of its proper divisors (86293203819).

256563010101 is a wasteful number, since it uses less digits than its factorization.

256563010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193050115.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 256563010101 its reverse (101010365652), we get a palindrome (357573375753).

The spelling of 256563010101 in words is "two hundred fifty-six billion, five hundred sixty-three million, ten thousand, one hundred one".