256330543123 has 8 divisors (see below), whose sum is σ = 269891766720. Its totient is φ = 242776333800.

The previous prime is 256330543099. The next prime is 256330543141. The reversal of 256330543123 is 321345033652.

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 256330543123 - 2²⁵ = 256296988691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256330543223) 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, 1678465 + ... + 1824802.

It is an arithmetic number, because the mean of its divisors is an integer number (33736470840).

Almost surely, 2^256330543123 is an apocalyptic number.

256330543123 is a deficient number, since it is larger than the sum of its proper divisors (13561223597).

256330543123 is a wasteful number, since it uses less digits than its factorization.

256330543123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507137.

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 256330543123 its reverse (321345033652), we get a palindrome (577675576775).

The spelling of 256330543123 in words is "two hundred fifty-six billion, three hundred thirty million, five hundred forty-three thousand, one hundred twenty-three".