20650955900 has 18 divisors (see below), whose sum is σ = 44812574520. Its totient is φ = 8260382320.

The previous prime is 20650955893. The next prime is 20650955917. The reversal of 20650955900 is 955905602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103254680 + ... + 103254879.

Almost surely, 2^20650955900 is an apocalyptic number.

20650955900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20650955900 is an abundant number, since it is smaller than the sum of its proper divisors (24161618620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20650955900 is a wasteful number, since it uses less digits than its factorization.

20650955900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206509573 (or 206509566 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 41.

The spelling of 20650955900 in words is "twenty billion, six hundred fifty million, nine hundred fifty-five thousand, nine hundred".