15128120617 has 8 divisors (see below), whose sum is σ = 15342669824. Its totient is φ = 14913769248.

The previous prime is 15128120611. The next prime is 15128120627. The reversal of 15128120617 is 71602182151.

15128120617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15128120617 - 2⁷ = 15128120489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15128120611) 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 7 ways as a sum of consecutive naturals, for example, 108088 + ... + 204790.

It is an arithmetic number, because the mean of its divisors is an integer number (1917833728).

Almost surely, 2^15128120617 is an apocalyptic number.

It is an amenable number.

15128120617 is a deficient number, since it is larger than the sum of its proper divisors (214549207).

15128120617 is an equidigital number, since it uses as much as digits as its factorization.

15128120617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98919.

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 15128120617 in words is "fifteen billion, one hundred twenty-eight million, one hundred twenty thousand, six hundred seventeen".