9218563085161 has 16 divisors (see below), whose sum is σ = 9725589333504. Its totient is φ = 8726732550144.

The previous prime is 9218563085159. The next prime is 9218563085191. The reversal of 9218563085161 is 1615803658129.

It is not a de Polignac number, because 9218563085161 - 2¹ = 9218563085159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9218563085101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10863865 + ... + 11681638.

It is an arithmetic number, because the mean of its divisors is an integer number (607849333344).

Almost surely, 2^{9218563085161} is an apocalyptic number.

It is an amenable number.

9218563085161 is a deficient number, since it is larger than the sum of its proper divisors (507026248343).

9218563085161 is a wasteful number, since it uses less digits than its factorization.

9218563085161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22545840.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 9218563085161 in words is "nine trillion, two hundred eighteen billion, five hundred sixty-three million, eighty-five thousand, one hundred sixty-one".