15505116109 has 12 divisors (see below), whose sum is σ = 18820763424. Its totient is φ = 12712268184.

The previous prime is 15505116103. The next prime is 15505116131. The reversal of 15505116109 is 90161150551.

It is not a de Polignac number, because 15505116109 - 2¹⁷ = 15504985037 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 (15505116103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6877807 + ... + 6880060.

It is an arithmetic number, because the mean of its divisors is an integer number (1568396952).

Almost surely, 2^15505116109 is an apocalyptic number.

It is an amenable number.

15505116109 is a deficient number, since it is larger than the sum of its proper divisors (3315647315).

15505116109 is a wasteful number, since it uses less digits than its factorization.

15505116109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13757904 (or 13757897 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 34.

The spelling of 15505116109 in words is "fifteen billion, five hundred five million, one hundred sixteen thousand, one hundred nine".