256613033532677 has 4 divisors (see below), whose sum is σ = 262072885310016. Its totient is φ = 251153181755340.

The previous prime is 256613033532673. The next prime is 256613033532731. The reversal of 256613033532677 is 776235330316652.

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 256613033532677 - 2² = 256613033532673 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 (256613033532673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729925888599 + ... + 2729925888692.

It is an arithmetic number, because the mean of its divisors is an integer number (65518221327504).

Almost surely, 2^{256613033532677} is an apocalyptic number.

It is an amenable number.

256613033532677 is a deficient number, since it is larger than the sum of its proper divisors (5459851777339).

256613033532677 is an equidigital number, since it uses as much as digits as its factorization.

256613033532677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459851777338.

The product of its (nonzero) digits is 85730400, while the sum is 59.

The spelling of 256613033532677 in words is "two hundred fifty-six trillion, six hundred thirteen billion, thirty-three million, five hundred thirty-two thousand, six hundred seventy-seven".