256424464141 has 4 divisors (see below), whose sum is σ = 260036076384. Its totient is φ = 252812851900.

The previous prime is 256424464139. The next prime is 256424464171. The reversal of 256424464141 is 141464424652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256424464141 - 2¹ = 256424464139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256424464171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805806015 + ... + 1805806156.

It is an arithmetic number, because the mean of its divisors is an integer number (65009019096).

Almost surely, 2^256424464141 is an apocalyptic number.

It is an amenable number.

256424464141 is a deficient number, since it is larger than the sum of its proper divisors (3611612243).

256424464141 is an equidigital number, since it uses as much as digits as its factorization.

256424464141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611612242.

The product of its digits is 737280, while the sum is 43.

Adding to 256424464141 its reverse (141464424652), we get a palindrome (397888888793).

The spelling of 256424464141 in words is "two hundred fifty-six billion, four hundred twenty-four million, four hundred sixty-four thousand, one hundred forty-one".