2556534310323 has 16 divisors (see below), whose sum is σ = 3900063321600. Its totient is φ = 1459229751936.

The previous prime is 2556534310307. The next prime is 2556534310373. The reversal of 2556534310323 is 3230134356552.

It is not a de Polignac number, because 2556534310323 - 2⁴ = 2556534310307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2556534310373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68605798 + ... + 68643051.

It is an arithmetic number, because the mean of its divisors is an integer number (243753957600).

Almost surely, 2^{2556534310323} is an apocalyptic number.

2556534310323 is a deficient number, since it is larger than the sum of its proper divisors (1343529011277).

2556534310323 is a wasteful number, since it uses less digits than its factorization.

2556534310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137249746.

The product of its (nonzero) digits is 972000, while the sum is 42.

Adding to 2556534310323 its reverse (3230134356552), we get a palindrome (5786668666875).

The spelling of 2556534310323 in words is "two trillion, five hundred fifty-six billion, five hundred thirty-four million, three hundred ten thousand, three hundred twenty-three".