20108894108 has 12 divisors (see below), whose sum is σ = 37260598032. Its totient is φ = 9463008960.

The previous prime is 20108894101. The next prime is 20108894111. The reversal of 20108894108 is 80149880102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20108894101) 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, 147859448 + ... + 147859583.

It is an arithmetic number, because the mean of its divisors is an integer number (3105049836).

Almost surely, 2^20108894108 is an apocalyptic number.

It is an amenable number.

20108894108 is a deficient number, since it is larger than the sum of its proper divisors (17151703924).

20108894108 is a wasteful number, since it uses less digits than its factorization.

20108894108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295719052 (or 295719050 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 41.

The spelling of 20108894108 in words is "twenty billion, one hundred eight million, eight hundred ninety-four thousand, one hundred eight".