20201000010009 has 64 divisors (see below), whose sum is σ = 33471267669504. Its totient is φ = 10552478662656.

The previous prime is 20201000009933. The next prime is 20201000010011. The reversal of 20201000010009 is 90001000010202.

It is a happy number.

It is not a de Polignac number, because 20201000010009 - 2⁸ = 20201000009753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201000010009.

It is not an unprimeable number, because it can be changed into a prime (20201000010209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37274197 + ... + 37812269.

It is an arithmetic number, because the mean of its divisors is an integer number (522988557336).

Almost surely, 2^{20201000010009} is an apocalyptic number.

It is an amenable number.

20201000010009 is a deficient number, since it is larger than the sum of its proper divisors (13270267659495).

20201000010009 is a wasteful number, since it uses less digits than its factorization.

20201000010009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539426.

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 20201000010009 in words is "twenty trillion, two hundred one billion, ten thousand, nine".