15424209085 has 4 divisors (see below), whose sum is σ = 18509050908. Its totient is φ = 12339367264.

The previous prime is 15424209083. The next prime is 15424209103. The reversal of 15424209085 is 58090242451.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7118803129 + 8305405956 = 84373^2 + 91134^2 .

It is a cyclic number.

It is not a de Polignac number, because 15424209085 - 2¹ = 15424209083 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 (15424209083) 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 3 ways as a sum of consecutive naturals, for example, 1542420904 + ... + 1542420913.

It is an arithmetic number, because the mean of its divisors is an integer number (4627262727).

Almost surely, 2^15424209085 is an apocalyptic number.

It is an amenable number.

15424209085 is a deficient number, since it is larger than the sum of its proper divisors (3084841823).

15424209085 is an equidigital number, since it uses as much as digits as its factorization.

15424209085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084841822.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 15424209085 in words is "fifteen billion, four hundred twenty-four million, two hundred nine thousand, eighty-five".