256700771627 has 4 divisors (see below), whose sum is σ = 256705642776. Its totient is φ = 256695900480.

The previous prime is 256700771611. The next prime is 256700771629. The reversal of 256700771627 is 726177007652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256700771627 - 2⁴ = 256700771611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256700771629) 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, 2355653 + ... + 2462214.

It is an arithmetic number, because the mean of its divisors is an integer number (64176410694).

Almost surely, 2^256700771627 is an apocalyptic number.

256700771627 is a deficient number, since it is larger than the sum of its proper divisors (4871149).

256700771627 is an equidigital number, since it uses as much as digits as its factorization.

256700771627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871148.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The spelling of 256700771627 in words is "two hundred fifty-six billion, seven hundred million, seven hundred seventy-one thousand, six hundred twenty-seven".