15500055103 has 8 divisors (see below), whose sum is σ = 16699814096. Its totient is φ = 14301360000.

The previous prime is 15500055089. The next prime is 15500055113. The reversal of 15500055103 is 30155000551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15500055103 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 (15500055113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235578 + ... + 294103.

It is an arithmetic number, because the mean of its divisors is an integer number (2087476762).

Almost surely, 2^15500055103 is an apocalyptic number.

15500055103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15500055103 is a deficient number, since it is larger than the sum of its proper divisors (1199758993).

15500055103 is a wasteful number, since it uses less digits than its factorization.

15500055103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531945.

The product of its (nonzero) digits is 1875, while the sum is 25.

Adding to 15500055103 its reverse (30155000551), we get a palindrome (45655055654).

The spelling of 15500055103 in words is "fifteen billion, five hundred million, fifty-five thousand, one hundred three".