16428722237952 has 80 divisors (see below), whose sum is σ = 43779905838240. Its totient is φ = 5474643812352.

The previous prime is 16428722237909. The next prime is 16428722237957. The reversal of 16428722237952 is 25973222782461.

It is not an unprimeable number, because it can be changed into a prime (16428722237957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715299 + ... + 6830877.

It is an arithmetic number, because the mean of its divisors is an integer number (547248822978).

Almost surely, 2^{16428722237952} is an apocalyptic number.

16428722237952 is a gapful number since it is divisible by the number (12) 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 16428722237952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21889952919120).

16428722237952 is an abundant number, since it is smaller than the sum of its proper divisors (27351183600288).

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

16428722237952 is an equidigital number, since it uses as much as digits as its factorization.

16428722237952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119033 (or 3119017 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 16428722237952 in words is "sixteen trillion, four hundred twenty-eight billion, seven hundred twenty-two million, two hundred thirty-seven thousand, nine hundred fifty-two".