2561460325613 has 16 divisors (see below), whose sum is σ = 3017201074944. Its totient is φ = 2128596382080.

The previous prime is 2561460325607. The next prime is 2561460325621. The reversal of 2561460325613 is 3165230641652.

It is not a de Polignac number, because 2561460325613 - 2¹⁶ = 2561460260077 is a prime.

It is a super-2 number, since 2×2561460325613² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561460328613) 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 15 ways as a sum of consecutive naturals, for example, 17524745 + ... + 17670302.

It is an arithmetic number, because the mean of its divisors is an integer number (188575067184).

Almost surely, 2^{2561460325613} is an apocalyptic number.

It is an amenable number.

2561460325613 is a deficient number, since it is larger than the sum of its proper divisors (455740749331).

2561460325613 is a wasteful number, since it uses less digits than its factorization.

2561460325613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35195372.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 2561460325613 in words is "two trillion, five hundred sixty-one billion, four hundred sixty million, three hundred twenty-five thousand, six hundred thirteen".