15116166566055 has 32 divisors (see below), whose sum is σ = 26874684683520. Its totient is φ = 8061505598880.

The previous prime is 15116166566051. The next prime is 15116166566087. The reversal of 15116166566055 is 55066566161151.

15116166566055 is a `hidden beast` number, since 1 + 5 + 1 + 16 + 1 + 66 + 566 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 15116166566055 - 2² = 15116166566051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15116166565992 and 15116166566010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15116166566051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689257 + ... + 5541426.

It is an arithmetic number, because the mean of its divisors is an integer number (839833896360).

Almost surely, 2^{15116166566055} is an apocalyptic number.

15116166566055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15116166566055 is a deficient number, since it is larger than the sum of its proper divisors (11758518117465).

15116166566055 is a wasteful number, since it uses less digits than its factorization.

15116166566055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248668 (or 6248662 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 15116166566055 in words is "fifteen trillion, one hundred sixteen billion, one hundred sixty-six million, five hundred sixty-six thousand, fifty-five".