20111038549103 has 4 divisors (see below), whose sum is σ = 20112343374648. Its totient is φ = 20109733723560.

The previous prime is 20111038549099. The next prime is 20111038549111. The reversal of 20111038549103 is 30194583011102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20111038549103 - 2² = 20111038549099 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 (20111038549153) 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, 652389653 + ... + 652420478.

It is an arithmetic number, because the mean of its divisors is an integer number (5028085843662).

Almost surely, 2^{20111038549103} is an apocalyptic number.

20111038549103 is a deficient number, since it is larger than the sum of its proper divisors (1304825545).

20111038549103 is a wasteful number, since it uses less digits than its factorization.

20111038549103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304825544.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 20111038549103 in words is "twenty trillion, one hundred eleven billion, thirty-eight million, five hundred forty-nine thousand, one hundred three".