10020012009 has 16 divisors (see below), whose sum is σ = 15580195200. Its totient is φ = 5725720560.

The previous prime is 10020011993. The next prime is 10020012011. The reversal of 10020012009 is 90021002001.

It is a happy number.

It is not a de Polignac number, because 10020012009 - 2⁴ = 10020011993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10020012089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4867782 + ... + 4869839.

It is an arithmetic number, because the mean of its divisors is an integer number (973762200).

Almost surely, 2^10020012009 is an apocalyptic number.

It is an amenable number.

10020012009 is a deficient number, since it is larger than the sum of its proper divisors (5560183191).

10020012009 is an frugal number, since it uses more digits than its factorization.

10020012009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9737645 (or 9737631 counting only the distinct ones).

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

The spelling of 10020012009 in words is "ten billion, twenty million, twelve thousand, nine".