86551234450169 has 2 divisors, whose sum is σ = 86551234450170. Its totient is φ = 86551234450168.

The previous prime is 86551234450129. The next prime is 86551234450189. The reversal of 86551234450169 is 96105443215568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57238484934544 + 29312749515625 = 7565612^2 + 5414125^2 .

It is a cyclic number.

It is not a de Polignac number, because 86551234450169 - 2²⁸ = 86550966014713 is a prime.

It is a super-2 number, since 2×86551234450169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86551234450129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43275617225084 + 43275617225085.

It is an arithmetic number, because the mean of its divisors is an integer number (43275617225085).

Almost surely, 2^{86551234450169} is an apocalyptic number.

It is an amenable number.

86551234450169 is a deficient number, since it is larger than the sum of its proper divisors (1).

86551234450169 is an equidigital number, since it uses as much as digits as its factorization.

86551234450169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104000, while the sum is 59.

The spelling of 86551234450169 in words is "eighty-six trillion, five hundred fifty-one billion, two hundred thirty-four million, four hundred fifty thousand, one hundred sixty-nine".