2556352321317 has 24 divisors (see below), whose sum is σ = 3811790228480. Its totient is φ = 1649186814240.

The previous prime is 2556352321307. The next prime is 2556352321331. The reversal of 2556352321317 is 7131232536552.

2556352321317 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 3 + 5 + 2 + 321 + 317 = 666.

2556352321317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2556352321317 - 2⁶ = 2556352321253 is a prime.

It is a super-2 number, since 2×2556352321317² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556352321307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6536388 + ... + 6916434.

Almost surely, 2^{2556352321317} is an apocalyptic number.

It is an amenable number.

2556352321317 is a deficient number, since it is larger than the sum of its proper divisors (1255437907163).

2556352321317 is a wasteful number, since it uses less digits than its factorization.

2556352321317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404193 (or 404190 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 45.

Adding to 2556352321317 its reverse (7131232536552), we get a palindrome (9687584857869).

The spelling of 2556352321317 in words is "two trillion, five hundred fifty-six billion, three hundred fifty-two million, three hundred twenty-one thousand, three hundred seventeen".