86361456109 has 2 divisors, whose sum is σ = 86361456110. Its totient is φ = 86361456108.

The previous prime is 86361456079. The next prime is 86361456179. The reversal of 86361456109 is 90165416368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71544480484 + 14816975625 = 267478^2 + 121725^2 .

It is a cyclic number.

It is not a de Polignac number, because 86361456109 - 2⁷ = 86361455981 is a prime.

It is a super-2 number, since 2×86361456109² (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 (86361456179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43180728054 + 43180728055.

It is an arithmetic number, because the mean of its divisors is an integer number (43180728055).

Almost surely, 2^86361456109 is an apocalyptic number.

It is an amenable number.

86361456109 is a deficient number, since it is larger than the sum of its proper divisors (1).

86361456109 is an equidigital number, since it uses as much as digits as its factorization.

86361456109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 86361456109 in words is "eighty-six billion, three hundred sixty-one million, four hundred fifty-six thousand, one hundred nine".