1002020578859 has 2 divisors, whose sum is σ = 1002020578860. Its totient is φ = 1002020578858.

The previous prime is 1002020578843. The next prime is 1002020578861. The reversal of 1002020578859 is 9588750202001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002020578859 - 2⁴ = 1002020578843 is a prime.

Together with 1002020578861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1002020578459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501010289429 + 501010289430.

It is an arithmetic number, because the mean of its divisors is an integer number (501010289430).

Almost surely, 2^{1002020578859} is an apocalyptic number.

1002020578859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002020578859 is an equidigital number, since it uses as much as digits as its factorization.

1002020578859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 1002020578859 in words is "one trillion, two billion, twenty million, five hundred seventy-eight thousand, eight hundred fifty-nine".