256477622706713 has 4 divisors (see below), whose sum is σ = 256477936581888. Its totient is φ = 256477308831540.

The previous prime is 256477622706671. The next prime is 256477622706757. The reversal of 256477622706713 is 317607226774652.

It is a happy number.

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 256477622706713 - 2⁸ = 256477622706457 is a prime.

It is a super-3 number, since 3×256477622706713³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256477622706713.

It is not an unprimeable number, because it can be changed into a prime (256477622706793) 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, 155708681 + ... + 157347222.

It is an arithmetic number, because the mean of its divisors is an integer number (64119484145472).

Almost surely, 2^{256477622706713} is an apocalyptic number.

It is an amenable number.

256477622706713 is a deficient number, since it is larger than the sum of its proper divisors (313875175).

256477622706713 is an equidigital number, since it uses as much as digits as its factorization.

256477622706713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313875174.

The product of its (nonzero) digits is 248935680, while the sum is 65.

The spelling of 256477622706713 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, six hundred twenty-two million, seven hundred six thousand, seven hundred thirteen".