16620758226 has 176 divisors, whose sum is σ = 40559348160. Its totient is φ = 5092385760.

The previous prime is 16620758171. The next prime is 16620758281. The reversal of 16620758226 is 62285702661.

16620758226 is a `hidden beast` number, since 1 + 6 + 62 + 0 + 7 + 582 + 2 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16620758171) and next prime (16620758281).

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 87 ways as a sum of consecutive naturals, for example, 78771261 + ... + 78771471.

Almost surely, 2^16620758226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16620758226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20279674080).

16620758226 is an abundant number, since it is smaller than the sum of its proper divisors (23938589934).

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

16620758226 is an equidigital number, since it uses as much as digits as its factorization.

16620758226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 16620758226 in words is "sixteen billion, six hundred twenty million, seven hundred fifty-eight thousand, two hundred twenty-six".