858327669421 has 2 divisors, whose sum is σ = 858327669422. Its totient is φ = 858327669420.

The previous prime is 858327669349. The next prime is 858327669427. The reversal of 858327669421 is 124966723858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 841760375625 + 16567293796 = 917475^2 + 128714^2 .

It is a cyclic number.

It is not a de Polignac number, because 858327669421 - 2⁷ = 858327669293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 858327669421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858327669427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429163834710 + 429163834711.

It is an arithmetic number, because the mean of its divisors is an integer number (429163834711).

Almost surely, 2^858327669421 is an apocalyptic number.

It is an amenable number.

858327669421 is a deficient number, since it is larger than the sum of its proper divisors (1).

858327669421 is an equidigital number, since it uses as much as digits as its factorization.

858327669421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 61.

The spelling of 858327669421 in words is "eight hundred fifty-eight billion, three hundred twenty-seven million, six hundred sixty-nine thousand, four hundred twenty-one".