256275364843 has 16 divisors (see below), whose sum is σ = 278677555200. Its totient is φ = 234776499840.

The previous prime is 256275364831. The next prime is 256275364931. The reversal of 256275364843 is 348463572652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 256275364843 - 2¹³ = 256275356651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256275364823) 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, 611955 + ... + 941827.

It is an arithmetic number, because the mean of its divisors is an integer number (17417347200).

Almost surely, 2^256275364843 is an apocalyptic number.

256275364843 is a deficient number, since it is larger than the sum of its proper divisors (22402190357).

256275364843 is a wasteful number, since it uses less digits than its factorization.

256275364843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331242.

The product of its digits is 29030400, while the sum is 55.

The spelling of 256275364843 in words is "two hundred fifty-six billion, two hundred seventy-five million, three hundred sixty-four thousand, eight hundred forty-three".