216482498985 has 32 divisors (see below), whose sum is σ = 347334728832. Its totient is φ = 115136744960.

The previous prime is 216482498983. The next prime is 216482498993. The reversal of 216482498985 is 589894284612.

It is not a de Polignac number, because 216482498985 - 2¹ = 216482498983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216482498983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12046627 + ... + 12064583.

It is an arithmetic number, because the mean of its divisors is an integer number (10854210276).

Almost surely, 2^216482498985 is an apocalyptic number.

It is an amenable number.

216482498985 is a deficient number, since it is larger than the sum of its proper divisors (130852229847).

216482498985 is a wasteful number, since it uses less digits than its factorization.

216482498985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20153.

The product of its digits is 79626240, while the sum is 66.

The spelling of 216482498985 in words is "two hundred sixteen billion, four hundred eighty-two million, four hundred ninety-eight thousand, nine hundred eighty-five".