86427237109 has 2 divisors, whose sum is σ = 86427237110. Its totient is φ = 86427237108.

The previous prime is 86427237097. The next prime is 86427237131. The reversal of 86427237109 is 90173272468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75213062500 + 11214174609 = 274250^2 + 105897^2 .

It is a cyclic number.

It is not a de Polignac number, because 86427237109 - 2¹¹ = 86427235061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86427237179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43213618554 + 43213618555.

It is an arithmetic number, because the mean of its divisors is an integer number (43213618555).

Almost surely, 2^86427237109 is an apocalyptic number.

It is an amenable number.

86427237109 is a deficient number, since it is larger than the sum of its proper divisors (1).

86427237109 is an equidigital number, since it uses as much as digits as its factorization.

86427237109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 86427237109 in words is "eighty-six billion, four hundred twenty-seven million, two hundred thirty-seven thousand, one hundred nine".