86218352669 has 2 divisors, whose sum is σ = 86218352670. Its totient is φ = 86218352668.

The previous prime is 86218352653. The next prime is 86218352711. The reversal of 86218352669 is 96625381268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63208496569 + 23009856100 = 251413^2 + 151690^2 .

It is a cyclic number.

It is not a de Polignac number, because 86218352669 - 2⁴ = 86218352653 is a prime.

It is a super-2 number, since 2×86218352669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86218355669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43109176334 + 43109176335.

It is an arithmetic number, because the mean of its divisors is an integer number (43109176335).

Almost surely, 2^86218352669 is an apocalyptic number.

It is an amenable number.

86218352669 is a deficient number, since it is larger than the sum of its proper divisors (1).

86218352669 is an equidigital number, since it uses as much as digits as its factorization.

86218352669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 56.

The spelling of 86218352669 in words is "eighty-six billion, two hundred eighteen million, three hundred fifty-two thousand, six hundred sixty-nine".