20910200912 has 40 divisors (see below), whose sum is σ = 41147759232. Its totient is φ = 10291881600.

The previous prime is 20910200911. The next prime is 20910200921. The reversal of 20910200912 is 21900201902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20910200911) 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, 736973 + ... + 764819.

Almost surely, 2^20910200912 is an apocalyptic number.

It is an amenable number.

20910200912 is a deficient number, since it is larger than the sum of its proper divisors (20237558320).

20910200912 is a wasteful number, since it uses less digits than its factorization.

20910200912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28587 (or 28581 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 20910200912 in words is "twenty billion, nine hundred ten million, two hundred thousand, nine hundred twelve".