8681077633 has 2 divisors, whose sum is σ = 8681077634. Its totient is φ = 8681077632.

The previous prime is 8681077619. The next prime is 8681077679. The reversal of 8681077633 is 3367701868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8227941264 + 453136369 = 90708^2 + 21287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8681077633 is a prime.

It is a super-2 number, since 2×8681077633² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8681077133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4340538816 + 4340538817.

It is an arithmetic number, because the mean of its divisors is an integer number (4340538817).

Almost surely, 2^8681077633 is an apocalyptic number.

It is an amenable number.

8681077633 is a deficient number, since it is larger than the sum of its proper divisors (1).

8681077633 is an equidigital number, since it uses as much as digits as its factorization.

8681077633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 8681077633 is about 93172.3007819384. The cubic root of 8681077633 is about 2055.2179295011.

The spelling of 8681077633 in words is "eight billion, six hundred eighty-one million, seventy-seven thousand, six hundred thirty-three".