216687742898 has 16 divisors (see below), whose sum is σ = 354648201120. Its totient is φ = 98475468000.

The previous prime is 216687742891. The next prime is 216687742927. The reversal of 216687742898 is 898247786612.

It is not an unprimeable number, because it can be changed into a prime (216687742891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830828 + ... + 1060023.

It is an arithmetic number, because the mean of its divisors is an integer number (22165512570).

Almost surely, 2^216687742898 is an apocalyptic number.

216687742898 is a deficient number, since it is larger than the sum of its proper divisors (137960458222).

216687742898 is a wasteful number, since it uses less digits than its factorization.

216687742898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896073.

The product of its digits is 130056192, while the sum is 68.

The spelling of 216687742898 in words is "two hundred sixteen billion, six hundred eighty-seven million, seven hundred forty-two thousand, eight hundred ninety-eight".