15505500505 has 32 divisors (see below), whose sum is σ = 21991989888. Its totient is φ = 10366540800.

The previous prime is 15505500503. The next prime is 15505500511. The reversal of 15505500505 is 50500550551.

15505500505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15505500505 - 2¹ = 15505500503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15505500503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152626 + ... + 233035.

It is an arithmetic number, because the mean of its divisors is an integer number (687249684).

Almost surely, 2^15505500505 is an apocalyptic number.

It is an amenable number.

15505500505 is a deficient number, since it is larger than the sum of its proper divisors (6486489383).

15505500505 is a wasteful number, since it uses less digits than its factorization.

15505500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385737.

The product of its (nonzero) digits is 15625, while the sum is 31.

It can be divided in two parts, 1550 and 5500505, that added together give a palindrome (5502055).

The spelling of 15505500505 in words is "fifteen billion, five hundred five million, five hundred thousand, five hundred five".