20910806010 has 48 divisors (see below), whose sum is σ = 54418093704. Its totient is φ = 5571086976.

The previous prime is 20910805921. The next prime is 20910806011. The reversal of 20910806010 is 1060801902.

It can be written as a sum of positive squares in 4 ways, for example, as 20468166489 + 442639521 = 143067^2 + 21039^2 .

It is not an unprimeable number, because it can be changed into a prime (20910806011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7917 + ... + 204656.

Almost surely, 2^20910806010 is an apocalyptic number.

20910806010 is an abundant number, since it is smaller than the sum of its proper divisors (33507287694).

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

20910806010 is a wasteful number, since it uses less digits than its factorization.

20910806010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213679 (or 213676 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 20910806010 in words is "twenty billion, nine hundred ten million, eight hundred six thousand, ten".