15559272559 has 4 divisors (see below), whose sum is σ = 16474523904. Its totient is φ = 14644021216.

The previous prime is 15559272541. The next prime is 15559272571. The reversal of 15559272559 is 95527295551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95527295551 = 719 ⋅132861329.

It is a cyclic number.

It is not a de Polignac number, because 15559272559 - 2⁷ = 15559272431 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 (15559272529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457625647 + ... + 457625680.

It is an arithmetic number, because the mean of its divisors is an integer number (4118630976).

Almost surely, 2^15559272559 is an apocalyptic number.

15559272559 is a deficient number, since it is larger than the sum of its proper divisors (915251345).

15559272559 is an equidigital number, since it uses as much as digits as its factorization.

15559272559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915251344.

The product of its digits is 7087500, while the sum is 55.

It can be divided in two parts, 15559272 and 559, that added together give a triangular number (15559831 = T₅₅₇₈).

The spelling of 15559272559 in words is "fifteen billion, five hundred fifty-nine million, two hundred seventy-two thousand, five hundred fifty-nine".