15540505159 has 4 divisors (see below), whose sum is σ = 15541518016. Its totient is φ = 15539492304.

The previous prime is 15540505147. The next prime is 15540505163. The reversal of 15540505159 is 95150504551.

15540505159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15540505159 - 2²⁷ = 15406287431 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 (15540505129) 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 3 ways as a sum of consecutive naturals, for example, 483054 + ... + 514219.

It is an arithmetic number, because the mean of its divisors is an integer number (3885379504).

Almost surely, 2^15540505159 is an apocalyptic number.

15540505159 is a deficient number, since it is larger than the sum of its proper divisors (1012857).

15540505159 is an equidigital number, since it uses as much as digits as its factorization.

15540505159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012856.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 15540505159 in words is "fifteen billion, five hundred forty million, five hundred five thousand, one hundred fifty-nine".