20611362103 has 4 divisors (see below), whose sum is σ = 20611649608. Its totient is φ = 20611074600.

The previous prime is 20611362097. The next prime is 20611362113. The reversal of 20611362103 is 30126311602.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20611362103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20611362113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60928 + ... + 211978.

It is an arithmetic number, because the mean of its divisors is an integer number (5152912402).

Almost surely, 2^20611362103 is an apocalyptic number.

20611362103 is a deficient number, since it is larger than the sum of its proper divisors (287505).

20611362103 is a wasteful number, since it uses less digits than its factorization.

20611362103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287504.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20611362103 its reverse (30126311602), we get a palindrome (50737673705).

The spelling of 20611362103 in words is "twenty billion, six hundred eleven million, three hundred sixty-two thousand, one hundred three".