20012310009 has 16 divisors (see below), whose sum is σ = 30054004800. Its totient is φ = 13158777888.

The previous prime is 20012309969. The next prime is 20012310011. The reversal of 20012310009 is 90001321002.

It is a happy number.

It is not a de Polignac number, because 20012310009 - 2⁹ = 20012309497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012309973 and 20012310000.

It is not an unprimeable number, because it can be changed into a prime (20012310029) 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, 5074719 + ... + 5078660.

It is an arithmetic number, because the mean of its divisors is an integer number (1878375300).

Almost surely, 2^20012310009 is an apocalyptic number.

It is an amenable number.

20012310009 is a deficient number, since it is larger than the sum of its proper divisors (10041694791).

20012310009 is a wasteful number, since it uses less digits than its factorization.

20012310009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153461 (or 10153455 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The spelling of 20012310009 in words is "twenty billion, twelve million, three hundred ten thousand, nine".