8766531281 has 2 divisors, whose sum is σ = 8766531282. Its totient is φ = 8766531280.

The previous prime is 8766531251. The next prime is 8766531311. The reversal of 8766531281 is 1821356678.

It is a balanced prime because it is at equal distance from previous prime (8766531251) and next prime (8766531311).

It can be written as a sum of positive squares in only one way, i.e., 5541313600 + 3225217681 = 74440^2 + 56791^2 .

It is a cyclic number.

It is not a de Polignac number, because 8766531281 - 2²² = 8762336977 is a prime.

It is a super-2 number, since 2×8766531281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8766531251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4383265640 + 4383265641.

It is an arithmetic number, because the mean of its divisors is an integer number (4383265641).

Almost surely, 2^8766531281 is an apocalyptic number.

8766531281 is the 41873-rd centered decagonal number.

It is an amenable number.

8766531281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8766531281 is an equidigital number, since it uses as much as digits as its factorization.

8766531281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 8766531281 is about 93629.7563865249. The cubic root of 8766531281 is about 2061.9395501807.

The spelling of 8766531281 in words is "eight billion, seven hundred sixty-six million, five hundred thirty-one thousand, two hundred eighty-one".