256346426163 has 16 divisors (see below), whose sum is σ = 362534679936. Its totient is φ = 160563108480.

The previous prime is 256346426159. The next prime is 256346426201. The reversal of 256346426163 is 361624643652.

It is not a de Polignac number, because 256346426163 - 2² = 256346426159 is a prime.

It is a super-3 number, since 3×256346426163³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256346426123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372281 + ... + 4430522.

It is an arithmetic number, because the mean of its divisors is an integer number (22658417496).

Almost surely, 2^256346426163 is an apocalyptic number.

256346426163 is a deficient number, since it is larger than the sum of its proper divisors (106188253773).

256346426163 is a wasteful number, since it uses less digits than its factorization.

256346426163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8803394.

The product of its digits is 3732480, while the sum is 48.

The spelling of 256346426163 in words is "two hundred fifty-six billion, three hundred forty-six million, four hundred twenty-six thousand, one hundred sixty-three".