216835540124 has 48 divisors (see below), whose sum is σ = 459765395712. Its totient is φ = 87351789312.

The previous prime is 216835540123. The next prime is 216835540189. The reversal of 216835540124 is 421045538612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216835540123) 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, 85199 + ... + 664025.

It is an arithmetic number, because the mean of its divisors is an integer number (9578445744).

Almost surely, 2^216835540124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216835540124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229882697856).

216835540124 is an abundant number, since it is smaller than the sum of its proper divisors (242929855588).

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

216835540124 is a wasteful number, since it uses less digits than its factorization.

216835540124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579642 (or 579640 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 216835540124 in words is "two hundred sixteen billion, eight hundred thirty-five million, five hundred forty thousand, one hundred twenty-four".