86306333821 has 2 divisors, whose sum is σ = 86306333822. Its totient is φ = 86306333820.

The previous prime is 86306333809. The next prime is 86306333863. The reversal of 86306333821 is 12833360368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86292000025 + 14333796 = 293755^2 + 3786^2 .

It is a cyclic number.

It is not a de Polignac number, because 86306333821 - 2²³ = 86297945213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86306333521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43153166910 + 43153166911.

It is an arithmetic number, because the mean of its divisors is an integer number (43153166911).

Almost surely, 2^86306333821 is an apocalyptic number.

It is an amenable number.

86306333821 is a deficient number, since it is larger than the sum of its proper divisors (1).

86306333821 is an equidigital number, since it uses as much as digits as its factorization.

86306333821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 86306333821 in words is "eighty-six billion, three hundred six million, three hundred thirty-three thousand, eight hundred twenty-one".