16633819712 has 56 divisors (see below), whose sum is σ = 33526838712. Its totient is φ = 8186572800.

The previous prime is 16633819649. The next prime is 16633819717. The reversal of 16633819712 is 21791833661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 922701376 + 15711118336 = 30376^2 + 125344^2 .

It is a super-2 number, since 2×16633819712² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16633819717) 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, 2524262 + ... + 2530842.

Almost surely, 2^16633819712 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 16633819712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16763419356).

16633819712 is an abundant number, since it is smaller than the sum of its proper divisors (16893019000).

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

16633819712 is an equidigital number, since it uses as much as digits as its factorization.

16633819712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207 (or 7197 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The spelling of 16633819712 in words is "sixteen billion, six hundred thirty-three million, eight hundred nineteen thousand, seven hundred twelve".