15539152209 has 32 divisors (see below), whose sum is σ = 25087574016. Its totient is φ = 8351857920.

The previous prime is 15539152207. The next prime is 15539152241. The reversal of 15539152209 is 90225193551.

15539152209 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 15539152209 - 2¹ = 15539152207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15539152201) 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, 582064 + ... + 608174.

It is an arithmetic number, because the mean of its divisors is an integer number (783986688).

Almost surely, 2^15539152209 is an apocalyptic number.

It is an amenable number.

15539152209 is a deficient number, since it is larger than the sum of its proper divisors (9548421807).

15539152209 is a wasteful number, since it uses less digits than its factorization.

15539152209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27805.

The product of its (nonzero) digits is 121500, while the sum is 42.

The spelling of 15539152209 in words is "fifteen billion, five hundred thirty-nine million, one hundred fifty-two thousand, two hundred nine".