20873643212 has 12 divisors (see below), whose sum is σ = 36533452536. Its totient is φ = 10435513920.

The previous prime is 20873643211. The next prime is 20873643233. The reversal of 20873643212 is 21234637802.

It is not an unprimeable number, because it can be changed into a prime (20873643211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290558 + ... + 355205.

It is an arithmetic number, because the mean of its divisors is an integer number (3044454378).

Almost surely, 2^20873643212 is an apocalyptic number.

It is an amenable number.

20873643212 is a deficient number, since it is larger than the sum of its proper divisors (15659809324).

20873643212 is a wasteful number, since it uses less digits than its factorization.

20873643212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653848 (or 653846 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 20873643212 in words is "twenty billion, eight hundred seventy-three million, six hundred forty-three thousand, two hundred twelve".