2581312516130 has 8 divisors (see below), whose sum is σ = 4646362529052. Its totient is φ = 1032525006448.

The previous prime is 2581312516129. The next prime is 2581312516157. The reversal of 2581312516130 is 316152131852.

It can be written as a sum of positive squares in 2 ways, for example, as 2577620617009 + 3691899121 = 1605497^2 + 60761^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129065625797 + ... + 129065625816.

Almost surely, 2^{2581312516130} is an apocalyptic number.

2581312516130 is a deficient number, since it is larger than the sum of its proper divisors (2065050012922).

2581312516130 is a wasteful number, since it uses less digits than its factorization.

2581312516130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258131251620.

The product of its (nonzero) digits is 43200, while the sum is 38.

Adding to 2581312516130 its reverse (316152131852), we get a palindrome (2897464647982).

The spelling of 2581312516130 in words is "two trillion, five hundred eighty-one billion, three hundred twelve million, five hundred sixteen thousand, one hundred thirty".