256744344001373 has 8 divisors (see below), whose sum is σ = 272073302995320. Its totient is φ = 241440535065600.

The previous prime is 256744344001367. The next prime is 256744344001391. The reversal of 256744344001373 is 373100443447652.

It can be written as a sum of positive squares in 4 ways, for example, as 12595812687364 + 244148531314009 = 3549058^2 + 15625253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256744344001373 - 2¹⁰ = 256744344000349 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 (256744344001393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6287493518 + ... + 6287534351.

It is an arithmetic number, because the mean of its divisors is an integer number (34009162874415).

Almost surely, 2^{256744344001373} is an apocalyptic number.

It is an amenable number.

256744344001373 is a deficient number, since it is larger than the sum of its proper divisors (15328958993947).

256744344001373 is a wasteful number, since it uses less digits than its factorization.

256744344001373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12575029087.

The product of its (nonzero) digits is 20321280, while the sum is 53.

The spelling of 256744344001373 in words is "two hundred fifty-six trillion, seven hundred forty-four billion, three hundred forty-four million, one thousand, three hundred seventy-three".