12103858953 has 24 divisors (see below), whose sum is σ = 18065954816. Its totient is φ = 7800883200.

The previous prime is 12103858903. The next prime is 12103858957. The reversal of 12103858953 is 35985830121.

12103858953 is a `hidden beast` number, since 1 + 2 + 10 + 3 + 8 + 589 + 53 = 666.

It is not a de Polignac number, because 12103858953 - 2²² = 12099664649 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12103858899 and 12103858908.

It is not an unprimeable number, because it can be changed into a prime (12103858957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254601 + ... + 298377.

Almost surely, 2^12103858953 is an apocalyptic number.

It is an amenable number.

12103858953 is a deficient number, since it is larger than the sum of its proper divisors (5962095863).

12103858953 is a wasteful number, since it uses less digits than its factorization.

12103858953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44805 (or 44802 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 12103858953 in words is "twelve billion, one hundred three million, eight hundred fifty-eight thousand, nine hundred fifty-three".