216917167038 has 128 divisors (see below), whose sum is σ = 542039662080. Its totient is φ = 56889630720.

The previous prime is 216917167021. The next prime is 216917167043. The reversal of 216917167038 is 830761719612.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1512706 + ... + 1649882.

It is an arithmetic number, because the mean of its divisors is an integer number (4234684860).

Almost surely, 2^216917167038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216917167038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271019831040).

216917167038 is an abundant number, since it is smaller than the sum of its proper divisors (325122495042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216917167038 is a wasteful number, since it uses less digits than its factorization.

216917167038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137322.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 216917167038 in words is "two hundred sixteen billion, nine hundred seventeen million, one hundred sixty-seven thousand, thirty-eight".