20103185853 has 32 divisors (see below), whose sum is σ = 30185126400. Its totient is φ = 13221232128.

The previous prime is 20103185777. The next prime is 20103185863. The reversal of 20103185853 is 35858130102.

It is not a de Polignac number, because 20103185853 - 2¹² = 20103181757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103185863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3053301 + ... + 3059877.

It is an arithmetic number, because the mean of its divisors is an integer number (943285200).

Almost surely, 2^20103185853 is an apocalyptic number.

It is an amenable number.

20103185853 is a deficient number, since it is larger than the sum of its proper divisors (10081940547).

20103185853 is a wasteful number, since it uses less digits than its factorization.

20103185853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098 (or 8092 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 20103185853 in words is "twenty billion, one hundred three million, one hundred eighty-five thousand, eight hundred fifty-three".