8136659651 has 2 divisors, whose sum is σ = 8136659652. Its totient is φ = 8136659650.

The previous prime is 8136659647. The next prime is 8136659719. The reversal of 8136659651 is 1569566318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8136659651 - 2² = 8136659647 is a prime.

It is a super-2 number, since 2×8136659651² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8136659651.

It is not a weakly prime, because it can be changed into another prime (8136059651) 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 as a sum of consecutive naturals, namely, 4068329825 + 4068329826.

It is an arithmetic number, because the mean of its divisors is an integer number (4068329826).

Almost surely, 2^8136659651 is an apocalyptic number.

8136659651 is a deficient number, since it is larger than the sum of its proper divisors (1).

8136659651 is an equidigital number, since it uses as much as digits as its factorization.

8136659651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 8136659651 is about 90203.4348071070. The cubic root of 8136659651 is about 2011.3240660033.

The spelling of 8136659651 in words is "eight billion, one hundred thirty-six million, six hundred fifty-nine thousand, six hundred fifty-one".