20200020009 has 32 divisors (see below), whose sum is σ = 30037077504. Its totient is φ = 11996225280.

The previous prime is 20200019971. The next prime is 20200020023. The reversal of 20200020009 is 90002000202.

It is not a de Polignac number, because 20200020009 - 2¹¹ = 20200017961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20200020009.

It is not an unprimeable number, because it can be changed into a prime (20200020059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45984 + ... + 206190.

It is an arithmetic number, because the mean of its divisors is an integer number (938658672).

Almost surely, 2^20200020009 is an apocalyptic number.

It is an amenable number.

20200020009 is a deficient number, since it is larger than the sum of its proper divisors (9837057495).

20200020009 is a wasteful number, since it uses less digits than its factorization.

20200020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160337.

The product of its (nonzero) digits is 72, while the sum is 15.

The spelling of 20200020009 in words is "twenty billion, two hundred million, twenty thousand, nine".