8133631261 has 16 divisors (see below), whose sum is σ = 9344903680. Its totient is φ = 6934792320.

The previous prime is 8133631241. The next prime is 8133631271. The reversal of 8133631261 is 1621363318.

It is a cyclic number.

It is not a de Polignac number, because 8133631261 - 2¹¹ = 8133629213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133631241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046851 + ... + 1054591.

It is an arithmetic number, because the mean of its divisors is an integer number (584056480).

Almost surely, 2^8133631261 is an apocalyptic number.

It is an amenable number.

8133631261 is a deficient number, since it is larger than the sum of its proper divisors (1211272419).

8133631261 is a wasteful number, since it uses less digits than its factorization.

8133631261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524.

The product of its digits is 15552, while the sum is 34.

The square root of 8133631261 is about 90186.6467998450. The cubic root of 8133631261 is about 2011.0745029235.

Adding to 8133631261 its reverse (1621363318), we get a palindrome (9754994579).

The spelling of 8133631261 in words is "eight billion, one hundred thirty-three million, six hundred thirty-one thousand, two hundred sixty-one".