2020129985 has 16 divisors (see below), whose sum is σ = 2498625792. Its totient is φ = 1567204800.

The previous prime is 2020129963. The next prime is 2020130011. The reversal of 2020129985 is 5899210202.

It is not a de Polignac number, because 2020129985 - 2⁸ = 2020129729 is a prime.

It is a super-2 number, since 2×2020129985² = 8161850312592200450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24989 + ... + 68298.

It is an arithmetic number, because the mean of its divisors is an integer number (156164112).

Almost surely, 2^2020129985 is an apocalyptic number.

It is an amenable number.

2020129985 is a deficient number, since it is larger than the sum of its proper divisors (478495807).

2020129985 is an equidigital number, since it uses as much as digits as its factorization.

2020129985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93424.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 2020129985 is about 44945.8561493715. The cubic root of 2020129985 is about 1264.1339789567.

The spelling of 2020129985 in words is "two billion, twenty million, one hundred twenty-nine thousand, nine hundred eighty-five".