20210001009 has 8 divisors (see below), whose sum is σ = 29396365152. Its totient is φ = 12248485440.

The previous prime is 20210000957. The next prime is 20210001011. The reversal of 20210001009 is 90010001202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20210001009 - 2²⁴ = 20193223793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20210005009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306212104 + ... + 306212169.

It is an arithmetic number, because the mean of its divisors is an integer number (3674545644).

Almost surely, 2^20210001009 is an apocalyptic number.

It is an amenable number.

20210001009 is a deficient number, since it is larger than the sum of its proper divisors (9186364143).

20210001009 is a wasteful number, since it uses less digits than its factorization.

20210001009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612424287.

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

The spelling of 20210001009 in words is "twenty billion, two hundred ten million, one thousand, nine".