216268170426 has 128 divisors (see below), whose sum is σ = 602323845120. Its totient is φ = 55879243200.

The previous prime is 216268170409. The next prime is 216268170511. The reversal of 216268170426 is 624071862612.

216268170426 is a `hidden beast` number, since 2 + 1 + 626 + 8 + 17 + 0 + 4 + 2 + 6 = 666.

216268170426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 658020 + ... + 930336.

It is an arithmetic number, because the mean of its divisors is an integer number (4705655040).

Almost surely, 2^216268170426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216268170426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301161922560).

216268170426 is an abundant number, since it is smaller than the sum of its proper divisors (386055674694).

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

216268170426 is a wasteful number, since it uses less digits than its factorization.

216268170426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272537 (or 272531 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 216268170426 in words is "two hundred sixteen billion, two hundred sixty-eight million, one hundred seventy thousand, four hundred twenty-six".