53687908665888 has 192 divisors, whose sum is σ = 170544652830720. Its totient is φ = 14436526804992.

The previous prime is 53687908665883. The next prime is 53687908665931. The reversal of 53687908665888 is 88856680978635.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53687908665883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357027645 + ... + 357177987.

It is an arithmetic number, because the mean of its divisors is an integer number (888253400160).

Almost surely, 2^{53687908665888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53687908665888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85272326415360).

53687908665888 is an abundant number, since it is smaller than the sum of its proper divisors (116856744164832).

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

53687908665888 is a wasteful number, since it uses less digits than its factorization.

53687908665888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181639 (or 181631 counting only the distinct ones).

The product of its (nonzero) digits is 33443020800, while the sum is 87.

The spelling of 53687908665888 in words is "fifty-three trillion, six hundred eighty-seven billion, nine hundred eight million, six hundred sixty-five thousand, eight hundred eighty-eight".