15660106112015 has 16 divisors (see below), whose sum is σ = 19730282957280. Its totient is φ = 11915543418240.

The previous prime is 15660106111981. The next prime is 15660106112017. The reversal of 15660106112015 is 51021160106651.

It is a happy number.

It is not a de Polignac number, because 15660106112015 - 2³² = 15655811144719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15660106112017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805965896 + ... + 805985325.

It is an arithmetic number, because the mean of its divisors is an integer number (1233142684830).

Almost surely, 2^{15660106112015} is an apocalyptic number.

15660106112015 is a deficient number, since it is larger than the sum of its proper divisors (4070176845265).

15660106112015 is a wasteful number, since it uses less digits than its factorization.

15660106112015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611951322.

The product of its (nonzero) digits is 10800, while the sum is 35.

Adding to 15660106112015 its reverse (51021160106651), we get a palindrome (66681266218666).

The spelling of 15660106112015 in words is "fifteen trillion, six hundred sixty billion, one hundred six million, one hundred twelve thousand, fifteen".