858327781099 has 2 divisors, whose sum is σ = 858327781100. Its totient is φ = 858327781098.

The previous prime is 858327781079. The next prime is 858327781111. The reversal of 858327781099 is 990187723858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 858327781099 - 2¹⁷ = 858327650027 is a prime.

It is not a weakly prime, because it can be changed into another prime (858327781079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429163890549 + 429163890550.

It is an arithmetic number, because the mean of its divisors is an integer number (429163890550).

Almost surely, 2^858327781099 is an apocalyptic number.

858327781099 is a deficient number, since it is larger than the sum of its proper divisors (1).

858327781099 is an equidigital number, since it uses as much as digits as its factorization.

858327781099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 858327781099 in words is "eight hundred fifty-eight billion, three hundred twenty-seven million, seven hundred eighty-one thousand, ninety-nine".