84636256631611 has 2 divisors, whose sum is σ = 84636256631612. Its totient is φ = 84636256631610.

The previous prime is 84636256631603. The next prime is 84636256631669. The reversal of 84636256631611 is 11613665263648.

It is a happy number.

It is an a-pointer prime, because the next prime (84636256631669) can be obtained adding 84636256631611 to its sum of digits (58).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84636256631611 - 2³ = 84636256631603 is a prime.

It is a super-2 number, since 2×84636256631611² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84636256631011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42318128315805 + 42318128315806.

It is an arithmetic number, because the mean of its divisors is an integer number (42318128315806).

Almost surely, 2^{84636256631611} is an apocalyptic number.

84636256631611 is a deficient number, since it is larger than the sum of its proper divisors (1).

84636256631611 is an equidigital number, since it uses as much as digits as its factorization.

84636256631611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22394880, while the sum is 58.

The spelling of 84636256631611 in words is "eighty-four trillion, six hundred thirty-six billion, two hundred fifty-six million, six hundred thirty-one thousand, six hundred eleven".