16522236780 has 192 divisors, whose sum is σ = 56053358592. Its totient is φ = 3555809280.

The previous prime is 16522236769. The next prime is 16522236781. The reversal of 16522236780 is 8763222561.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (16522236781) by changing a digit.

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, 464592 + ... + 498888.

It is an arithmetic number, because the mean of its divisors is an integer number (291944576).

Almost surely, 2^16522236780 is an apocalyptic number.

16522236780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16522236780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28026679296).

16522236780 is an abundant number, since it is smaller than the sum of its proper divisors (39531121812).

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

16522236780 is a wasteful number, since it uses less digits than its factorization.

16522236780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34384 (or 34382 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 16522236780 in words is "sixteen billion, five hundred twenty-two million, two hundred thirty-six thousand, seven hundred eighty".