16012216691226 has 240 divisors, whose sum is σ = 42170856789600. Its totient is φ = 4527578970432.

The previous prime is 16012216691221. The next prime is 16012216691231. The reversal of 16012216691226 is 62219661221061.

16012216691226 is a `hidden beast` number, since 1 + 60 + 1 + 221 + 66 + 91 + 226 = 666.

It is an interprime number because it is at equal distance from previous prime (16012216691221) and next prime (16012216691231).

It is a super-2 number, since 2×16012216691226² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16012216691221) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 349749205 + ... + 349794983.

It is an arithmetic number, because the mean of its divisors is an integer number (175711903290).

Almost surely, 2^{16012216691226} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16012216691226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21085428394800).

16012216691226 is an abundant number, since it is smaller than the sum of its proper divisors (26158640098374).

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

16012216691226 is a wasteful number, since it uses less digits than its factorization.

16012216691226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46263 (or 46247 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 16012216691226 in words is "sixteen trillion, twelve billion, two hundred sixteen million, six hundred ninety-one thousand, two hundred twenty-six".