55817061055776 has 72 divisors (see below), whose sum is σ = 161724668692860. Its totient is φ = 18254636315136.

The previous prime is 55817061055709. The next prime is 55817061055793. The reversal of 55817061055776 is 67755016071855.

55817061055776 is a `hidden beast` number, since 5 + 5 + 8 + 1 + 7 + 0 + 6 + 1 + 0 + 557 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55624448912400 + 192612143376 = 7458180^2 + 438876^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1828373791 + ... + 1828404318.

Almost surely, 2^{55817061055776} is an apocalyptic number.

It is an amenable number.

55817061055776 is an abundant number, since it is smaller than the sum of its proper divisors (105907607637084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55817061055776 is a wasteful number, since it uses less digits than its factorization.

55817061055776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656778178 (or 3656778167 counting only the distinct ones).

The product of its (nonzero) digits is 61740000, while the sum is 63.

The spelling of 55817061055776 in words is "fifty-five trillion, eight hundred seventeen billion, sixty-one million, fifty-five thousand, seven hundred seventy-six".