16601322276 has 240 divisors, whose sum is σ = 56957429760. Its totient is φ = 4084966080.

The previous prime is 16601322251. The next prime is 16601322323. The reversal of 16601322276 is 67222310661.

16601322276 is a `hidden beast` number, since 1 + 6 + 60 + 1 + 322 + 276 = 666.

It is a super-2 number, since 2×16601322276² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16601322276.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 456501 + ... + 491523.

It is an arithmetic number, because the mean of its divisors is an integer number (237322624).

Almost surely, 2^16601322276 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 16601322276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28478714880).

16601322276 is an abundant number, since it is smaller than the sum of its proper divisors (40356107484).

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

16601322276 is a wasteful number, since it uses less digits than its factorization.

16601322276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35076 (or 35065 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 16601322276 in words is "sixteen billion, six hundred one million, three hundred twenty-two thousand, two hundred seventy-six".