86228819819 has 2 divisors, whose sum is σ = 86228819820. Its totient is φ = 86228819818.

The previous prime is 86228819797. The next prime is 86228819863. The reversal of 86228819819 is 91891882268.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86228819819 - 2²⁰ = 86227771243 is a prime.

It is a super-2 number, since 2×86228819819² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (86228819219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43114409909 + 43114409910.

It is an arithmetic number, because the mean of its divisors is an integer number (43114409910).

Almost surely, 2^86228819819 is an apocalyptic number.

86228819819 is a deficient number, since it is larger than the sum of its proper divisors (1).

86228819819 is an equidigital number, since it uses as much as digits as its factorization.

86228819819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 62.

The spelling of 86228819819 in words is "eighty-six billion, two hundred twenty-eight million, eight hundred nineteen thousand, eight hundred nineteen".