20109102826 has 16 divisors (see below), whose sum is σ = 30662107200. Its totient is φ = 9889168608.

The previous prime is 20109102799. The next prime is 20109102857. The reversal of 20109102826 is 62820190102.

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, 139416 + ... + 244243.

It is an arithmetic number, because the mean of its divisors is an integer number (1916381700).

Almost surely, 2^20109102826 is an apocalyptic number.

20109102826 is a deficient number, since it is larger than the sum of its proper divisors (10553004374).

20109102826 is a wasteful number, since it uses less digits than its factorization.

20109102826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384093.

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 20109102826 its reverse (62820190102), we get a palindrome (82929292928).

The spelling of 20109102826 in words is "twenty billion, one hundred nine million, one hundred two thousand, eight hundred twenty-six".