12103436553 has 32 divisors (see below), whose sum is σ = 17507629440. Its totient is φ = 7393413120.

The previous prime is 12103436539. The next prime is 12103436561. The reversal of 12103436553 is 35563430121.

It is not a de Polignac number, because 12103436553 - 2⁶ = 12103436489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12103436593) 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, 6266998 + ... + 6268928.

It is an arithmetic number, because the mean of its divisors is an integer number (547113420).

Almost surely, 2^12103436553 is an apocalyptic number.

12103436553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12103436553 is a deficient number, since it is larger than the sum of its proper divisors (5404192887).

12103436553 is a wasteful number, since it uses less digits than its factorization.

12103436553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 12103436553 its reverse (35563430121), we get a palindrome (47666866674).

The spelling of 12103436553 in words is "twelve billion, one hundred three million, four hundred thirty-six thousand, five hundred fifty-three".