216416137 has 16 divisors (see below), whose sum is σ = 275667840. Its totient is φ = 165397248.

The previous prime is 216416129. The next prime is 216416147. The reversal of 216416137 is 731614612.

It is a cyclic number.

It is not a de Polignac number, because 216416137 - 2³ = 216416129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216416099 and 216416108.

It is not an unprimeable number, because it can be changed into a prime (216416107) 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, 45598 + ... + 50119.

It is an arithmetic number, because the mean of its divisors is an integer number (17229240).

Almost surely, 2^216416137 is an apocalyptic number.

It is an amenable number.

216416137 is a deficient number, since it is larger than the sum of its proper divisors (59251703).

216416137 is a wasteful number, since it uses less digits than its factorization.

216416137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95760.

The product of its digits is 6048, while the sum is 31.

The square root of 216416137 is about 14711.0889127896. The cubic root of 216416137 is about 600.3850648593.

The spelling of 216416137 in words is "two hundred sixteen million, four hundred sixteen thousand, one hundred thirty-seven".