86538121008617 has 2 divisors, whose sum is σ = 86538121008618. Its totient is φ = 86538121008616.

The previous prime is 86538121008601. The next prime is 86538121008643. The reversal of 86538121008617 is 71680012183568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84780192403456 + 1757928605161 = 9207616^2 + 1325869^2 .

It is a cyclic number.

It is not a de Polignac number, because 86538121008617 - 2⁴ = 86538121008601 is a prime.

It is a super-3 number, since 3×86538121008617³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (86538121008217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43269060504308 + 43269060504309.

It is an arithmetic number, because the mean of its divisors is an integer number (43269060504309).

Almost surely, 2^{86538121008617} is an apocalyptic number.

It is an amenable number.

86538121008617 is a deficient number, since it is larger than the sum of its proper divisors (1).

86538121008617 is an equidigital number, since it uses as much as digits as its factorization.

86538121008617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 86538121008617 in words is "eighty-six trillion, five hundred thirty-eight billion, one hundred twenty-one million, eight thousand, six hundred seventeen".