22061664216 has 96 divisors (see below), whose sum is σ = 62392468320. Its totient is φ = 7029158400.

The previous prime is 22061664143. The next prime is 22061664221. The reversal of 22061664216 is 61246616022.

22061664216 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 1 + 6 + 642 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2846106 + ... + 2853846.

It is an arithmetic number, because the mean of its divisors is an integer number (649921545).

Almost surely, 2^22061664216 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 22061664216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31196234160).

22061664216 is an abundant number, since it is smaller than the sum of its proper divisors (40330804104).

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

22061664216 is a wasteful number, since it uses less digits than its factorization.

22061664216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9497 (or 9490 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 22061664216 in words is "twenty-two billion, sixty-one million, six hundred sixty-four thousand, two hundred sixteen".