15660516616055 has 64 divisors (see below), whose sum is σ = 20108208476160. Its totient is φ = 11683031433216.

The previous prime is 15660516616001. The next prime is 15660516616079. The reversal of 15660516616055 is 55061661506651.

It is a cyclic number.

It is not a de Polignac number, because 15660516616055 - 2¹⁶ = 15660516550519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15660516615988 and 15660516616006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1713962447 + ... + 1713971583.

It is an arithmetic number, because the mean of its divisors is an integer number (314190757440).

Almost surely, 2^{15660516616055} is an apocalyptic number.

15660516616055 is a deficient number, since it is larger than the sum of its proper divisors (4447691860105).

15660516616055 is a wasteful number, since it uses less digits than its factorization.

15660516616055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11600.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 15660516616055 in words is "fifteen trillion, six hundred sixty billion, five hundred sixteen million, six hundred sixteen thousand, fifty-five".