15008978459 has 4 divisors (see below), whose sum is σ = 15009426504. Its totient is φ = 15008530416.

The previous prime is 15008978443. The next prime is 15008978497. The reversal of 15008978459 is 95487980051.

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 15008978459 - 2⁴ = 15008978443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15008978059) 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, 169322 + ... + 242255.

It is an arithmetic number, because the mean of its divisors is an integer number (3752356626).

Almost surely, 2^15008978459 is an apocalyptic number.

15008978459 is a deficient number, since it is larger than the sum of its proper divisors (448045).

15008978459 is an equidigital number, since it uses as much as digits as its factorization.

15008978459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448044.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 15008978459 in words is "fifteen billion, eight million, nine hundred seventy-eight thousand, four hundred fifty-nine".