12103413550 has 24 divisors (see below), whose sum is σ = 22525183296. Its totient is φ = 4838605440.

The previous prime is 12103413547. The next prime is 12103413559. The reversal of 12103413550 is 5531430121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103413559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20739 + ... + 156961.

It is an arithmetic number, because the mean of its divisors is an integer number (938549304).

Almost surely, 2^12103413550 is an apocalyptic number.

12103413550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12103413550 is a deficient number, since it is larger than the sum of its proper divisors (10421769746).

12103413550 is a wasteful number, since it uses less digits than its factorization.

12103413550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138012 (or 138007 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 12103413550 its reverse (5531430121), we get a palindrome (17634843671).

The spelling of 12103413550 in words is "twelve billion, one hundred three million, four hundred thirteen thousand, five hundred fifty".