55516665016161 has 48 divisors (see below), whose sum is σ = 81063607562496. Its totient is φ = 36609638542848.

The previous prime is 55516665016121. The next prime is 55516665016207. The reversal of 55516665016161 is 16161056661555.

It is not a de Polignac number, because 55516665016161 - 2⁹ = 55516665015649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55516665016098 and 55516665016107.

It is not an unprimeable number, because it can be changed into a prime (55516665016121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1118653830 + ... + 1118703456.

It is an arithmetic number, because the mean of its divisors is an integer number (1688825157552).

Almost surely, 2^{55516665016161} is an apocalyptic number.

It is an amenable number.

55516665016161 is a deficient number, since it is larger than the sum of its proper divisors (25546942546335).

55516665016161 is a wasteful number, since it uses less digits than its factorization.

55516665016161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51942 (or 51939 counting only the distinct ones).

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

The spelling of 55516665016161 in words is "fifty-five trillion, five hundred sixteen billion, six hundred sixty-five million, sixteen thousand, one hundred sixty-one".