20102105608 has 32 divisors (see below), whose sum is σ = 41162506560. Its totient is φ = 9147216960.

The previous prime is 20102105591. The next prime is 20102105623. The reversal of 20102105608 is 80650120102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353810 + ... + 1368577.

It is an arithmetic number, because the mean of its divisors is an integer number (1286328330).

Almost surely, 2^20102105608 is an apocalyptic number.

It is an amenable number.

20102105608 is an abundant number, since it is smaller than the sum of its proper divisors (21060400952).

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

20102105608 is a wasteful number, since it uses less digits than its factorization.

20102105608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722477 (or 2722473 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The spelling of 20102105608 in words is "twenty billion, one hundred two million, one hundred five thousand, six hundred eight".