216461641543055 has 16 divisors (see below), whose sum is σ = 260110945394400. Its totient is φ = 172931339422080.

The previous prime is 216461641542997. The next prime is 216461641543151. The reversal of 216461641543055 is 550345146164612.

It is not a de Polignac number, because 216461641543055 - 2¹⁰ = 216461641542031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216461641542988 and 216461641543006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182047565 + ... + 183232745.

It is an arithmetic number, because the mean of its divisors is an integer number (16256934087150).

Almost surely, 2^{216461641543055} is an apocalyptic number.

216461641543055 is a deficient number, since it is larger than the sum of its proper divisors (43649303851345).

216461641543055 is a wasteful number, since it uses less digits than its factorization.

216461641543055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235354.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 216461641543055 in words is "two hundred sixteen trillion, four hundred sixty-one billion, six hundred forty-one million, five hundred forty-three thousand, fifty-five".