2681512133 has 2 divisors, whose sum is σ = 2681512134. Its totient is φ = 2681512132.

The previous prime is 2681512129. The next prime is 2681512147. The reversal of 2681512133 is 3312151862.

2681512133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2631484804 + 50027329 = 51298^2 + 7073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2681512133 - 2² = 2681512129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2681512133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681512633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340756066 + 1340756067.

It is an arithmetic number, because the mean of its divisors is an integer number (1340756067).

Almost surely, 2^2681512133 is an apocalyptic number.

It is an amenable number.

2681512133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681512133 is an equidigital number, since it uses as much as digits as its factorization.

2681512133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 2681512133 is about 51783.3190612576. The cubic root of 2681512133 is about 1389.2911060165.

Adding to 2681512133 its reverse (3312151862), we get a palindrome (5993663995).

The spelling of 2681512133 in words is "two billion, six hundred eighty-one million, five hundred twelve thousand, one hundred thirty-three".